unix: fix missing use of use function in sysctl

Updates golang/go#13372.

Change-Id: Idfd5001f4ad7bc80a4283df1c310f97612eba85c
Reviewed-on: https://go-review.googlesource.com/23124
Run-TryBot: Mikio Hara <mikioh.mikioh@gmail.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>

unix/zsyscall_darwin_386.go

@@ -222,6 +222,7 @@ func sysctl(mib []_C_int, old *byte, oldlen *uintptr, new *byte, newlen uintptr)
 		_p0 = unsafe.Pointer(&_zero)
 	}
 	_, _, e1 := Syscall6(SYS___SYSCTL, uintptr(_p0), uintptr(len(mib)), uintptr(unsafe.Pointer(old)), uintptr(unsafe.Pointer(oldlen)), uintptr(unsafe.Pointer(new)), uintptr(newlen))
+	use(_p0)
 	if e1 != 0 {
 		err = errnoErr(e1)
 	}

unix/zsyscall_darwin_amd64.go

@@ -222,6 +222,7 @@ func sysctl(mib []_C_int, old *byte, oldlen *uintptr, new *byte, newlen uintptr)
 		_p0 = unsafe.Pointer(&_zero)
 	}
 	_, _, e1 := Syscall6(SYS___SYSCTL, uintptr(_p0), uintptr(len(mib)), uintptr(unsafe.Pointer(old)), uintptr(unsafe.Pointer(oldlen)), uintptr(unsafe.Pointer(new)), uintptr(newlen))
+	use(_p0)
 	if e1 != 0 {
 		err = errnoErr(e1)
 	}

unix/zsyscall_darwin_arm.go

@@ -222,6 +222,7 @@ func sysctl(mib []_C_int, old *byte, oldlen *uintptr, new *byte, newlen uintptr)
 		_p0 = unsafe.Pointer(&_zero)
 	}
 	_, _, e1 := Syscall6(SYS___SYSCTL, uintptr(_p0), uintptr(len(mib)), uintptr(unsafe.Pointer(old)), uintptr(unsafe.Pointer(oldlen)), uintptr(unsafe.Pointer(new)), uintptr(newlen))
+	use(_p0)
 	if e1 != 0 {
 		err = errnoErr(e1)
 	}

unix/zsyscall_darwin_arm64.go

@@ -222,6 +222,7 @@ func sysctl(mib []_C_int, old *byte, oldlen *uintptr, new *byte, newlen uintptr)
 		_p0 = unsafe.Pointer(&_zero)
 	}
 	_, _, e1 := Syscall6(SYS___SYSCTL, uintptr(_p0), uintptr(len(mib)), uintptr(unsafe.Pointer(old)), uintptr(unsafe.Pointer(oldlen)), uintptr(unsafe.Pointer(new)), uintptr(newlen))
+	use(_p0)
 	if e1 != 0 {
 		err = errnoErr(e1)
 	}

unix/zsyscall_dragonfly_amd64.go

@@ -222,6 +222,7 @@ func sysctl(mib []_C_int, old *byte, oldlen *uintptr, new *byte, newlen uintptr)
 		_p0 = unsafe.Pointer(&_zero)
 	}
 	_, _, e1 := Syscall6(SYS___SYSCTL, uintptr(_p0), uintptr(len(mib)), uintptr(unsafe.Pointer(old)), uintptr(unsafe.Pointer(oldlen)), uintptr(unsafe.Pointer(new)), uintptr(newlen))
+	use(_p0)
 	if e1 != 0 {
 		err = errnoErr(e1)
 	}

unix/zsyscall_freebsd_386.go

@@ -222,6 +222,7 @@ func sysctl(mib []_C_int, old *byte, oldlen *uintptr, new *byte, newlen uintptr)
 		_p0 = unsafe.Pointer(&_zero)
 	}
 	_, _, e1 := Syscall6(SYS___SYSCTL, uintptr(_p0), uintptr(len(mib)), uintptr(unsafe.Pointer(old)), uintptr(unsafe.Pointer(oldlen)), uintptr(unsafe.Pointer(new)), uintptr(newlen))
+	use(_p0)
 	if e1 != 0 {
 		err = errnoErr(e1)
 	}

unix/zsyscall_freebsd_amd64.go

@@ -222,6 +222,7 @@ func sysctl(mib []_C_int, old *byte, oldlen *uintptr, new *byte, newlen uintptr)
 		_p0 = unsafe.Pointer(&_zero)
 	}
 	_, _, e1 := Syscall6(SYS___SYSCTL, uintptr(_p0), uintptr(len(mib)), uintptr(unsafe.Pointer(old)), uintptr(unsafe.Pointer(oldlen)), uintptr(unsafe.Pointer(new)), uintptr(newlen))
+	use(_p0)
 	if e1 != 0 {
 		err = errnoErr(e1)
 	}

unix/zsyscall_freebsd_arm.go

@@ -222,6 +222,7 @@ func sysctl(mib []_C_int, old *byte, oldlen *uintptr, new *byte, newlen uintptr)
 		_p0 = unsafe.Pointer(&_zero)
 	}
 	_, _, e1 := Syscall6(SYS___SYSCTL, uintptr(_p0), uintptr(len(mib)), uintptr(unsafe.Pointer(old)), uintptr(unsafe.Pointer(oldlen)), uintptr(unsafe.Pointer(new)), uintptr(newlen))
+	use(_p0)
 	if e1 != 0 {
 		err = errnoErr(e1)
 	}

unix/zsyscall_netbsd_386.go

@@ -222,6 +222,7 @@ func sysctl(mib []_C_int, old *byte, oldlen *uintptr, new *byte, newlen uintptr)
 		_p0 = unsafe.Pointer(&_zero)
 	}
 	_, _, e1 := Syscall6(SYS___SYSCTL, uintptr(_p0), uintptr(len(mib)), uintptr(unsafe.Pointer(old)), uintptr(unsafe.Pointer(oldlen)), uintptr(unsafe.Pointer(new)), uintptr(newlen))
+	use(_p0)
 	if e1 != 0 {
 		err = errnoErr(e1)
 	}

unix/zsyscall_netbsd_amd64.go

@@ -222,6 +222,7 @@ func sysctl(mib []_C_int, old *byte, oldlen *uintptr, new *byte, newlen uintptr)
 		_p0 = unsafe.Pointer(&_zero)
 	}
 	_, _, e1 := Syscall6(SYS___SYSCTL, uintptr(_p0), uintptr(len(mib)), uintptr(unsafe.Pointer(old)), uintptr(unsafe.Pointer(oldlen)), uintptr(unsafe.Pointer(new)), uintptr(newlen))
+	use(_p0)
 	if e1 != 0 {
 		err = errnoErr(e1)
 	}

unix/zsyscall_netbsd_arm.go

@@ -222,6 +222,7 @@ func sysctl(mib []_C_int, old *byte, oldlen *uintptr, new *byte, newlen uintptr)
 		_p0 = unsafe.Pointer(&_zero)
 	}
 	_, _, e1 := Syscall6(SYS___SYSCTL, uintptr(_p0), uintptr(len(mib)), uintptr(unsafe.Pointer(old)), uintptr(unsafe.Pointer(oldlen)), uintptr(unsafe.Pointer(new)), uintptr(newlen))
+	use(_p0)
 	if e1 != 0 {
 		err = errnoErr(e1)
 	}

unix/zsyscall_openbsd_386.go

@@ -222,6 +222,7 @@ func sysctl(mib []_C_int, old *byte, oldlen *uintptr, new *byte, newlen uintptr)
 		_p0 = unsafe.Pointer(&_zero)
 	}
 	_, _, e1 := Syscall6(SYS___SYSCTL, uintptr(_p0), uintptr(len(mib)), uintptr(unsafe.Pointer(old)), uintptr(unsafe.Pointer(oldlen)), uintptr(unsafe.Pointer(new)), uintptr(newlen))
+	use(_p0)
 	if e1 != 0 {
 		err = errnoErr(e1)
 	}

unix/zsyscall_openbsd_amd64.go

@@ -222,6 +222,7 @@ func sysctl(mib []_C_int, old *byte, oldlen *uintptr, new *byte, newlen uintptr)
 		_p0 = unsafe.Pointer(&_zero)
 	}
 	_, _, e1 := Syscall6(SYS___SYSCTL, uintptr(_p0), uintptr(len(mib)), uintptr(unsafe.Pointer(old)), uintptr(unsafe.Pointer(oldlen)), uintptr(unsafe.Pointer(new)), uintptr(newlen))
+	use(_p0)
 	if e1 != 0 {
 		err = errnoErr(e1)
 	}