unix: add missing SizeofIovec constant on Linux

Add the SizeofIovec constant corresponding to type Iovec.

Change-Id: Icde241b8cac3bc89806f0081a4021598bf0ef7cf
Reviewed-on: https://go-review.googlesource.com/51730
Reviewed-by: Matt Layher <mdlayher@gmail.com>
Run-TryBot: Matt Layher <mdlayher@gmail.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>

unix/linux/types.go

@@ -344,6 +344,7 @@ const (
 	SizeofSockaddrALG       = C.sizeof_struct_sockaddr_alg
 	SizeofSockaddrVM        = C.sizeof_struct_sockaddr_vm
 	SizeofLinger            = C.sizeof_struct_linger
+	SizeofIovec             = C.sizeof_struct_iovec
 	SizeofIPMreq            = C.sizeof_struct_ip_mreq
 	SizeofIPMreqn           = C.sizeof_struct_ip_mreqn
 	SizeofIPv6Mreq          = C.sizeof_struct_ipv6_mreq

unix/ztypes_linux_386.go

@@ -373,6 +373,7 @@ const (
 	SizeofSockaddrALG       = 0x58
 	SizeofSockaddrVM        = 0x10
 	SizeofLinger            = 0x8
+	SizeofIovec             = 0x8
 	SizeofIPMreq            = 0x8
 	SizeofIPMreqn           = 0xc
 	SizeofIPv6Mreq          = 0x14

unix/ztypes_linux_amd64.go

@@ -377,6 +377,7 @@ const (
 	SizeofSockaddrALG       = 0x58
 	SizeofSockaddrVM        = 0x10
 	SizeofLinger            = 0x8
+	SizeofIovec             = 0x10
 	SizeofIPMreq            = 0x8
 	SizeofIPMreqn           = 0xc
 	SizeofIPv6Mreq          = 0x14

unix/ztypes_linux_arm.go

@@ -377,6 +377,7 @@ const (
 	SizeofSockaddrALG       = 0x58
 	SizeofSockaddrVM        = 0x10
 	SizeofLinger            = 0x8
+	SizeofIovec             = 0x8
 	SizeofIPMreq            = 0x8
 	SizeofIPMreqn           = 0xc
 	SizeofIPv6Mreq          = 0x14

unix/ztypes_linux_arm64.go

@@ -378,6 +378,7 @@ const (
 	SizeofSockaddrALG       = 0x58
 	SizeofSockaddrVM        = 0x10
 	SizeofLinger            = 0x8
+	SizeofIovec             = 0x10
 	SizeofIPMreq            = 0x8
 	SizeofIPMreqn           = 0xc
 	SizeofIPv6Mreq          = 0x14

unix/ztypes_linux_mips.go

@@ -376,6 +376,7 @@ const (
 	SizeofSockaddrALG       = 0x58
 	SizeofSockaddrVM        = 0x10
 	SizeofLinger            = 0x8
+	SizeofIovec             = 0x8
 	SizeofIPMreq            = 0x8
 	SizeofIPMreqn           = 0xc
 	SizeofIPv6Mreq          = 0x14

unix/ztypes_linux_mips64.go

@@ -378,6 +378,7 @@ const (
 	SizeofSockaddrALG       = 0x58
 	SizeofSockaddrVM        = 0x10
 	SizeofLinger            = 0x8
+	SizeofIovec             = 0x10
 	SizeofIPMreq            = 0x8
 	SizeofIPMreqn           = 0xc
 	SizeofIPv6Mreq          = 0x14

unix/ztypes_linux_mips64le.go

@@ -378,6 +378,7 @@ const (
 	SizeofSockaddrALG       = 0x58
 	SizeofSockaddrVM        = 0x10
 	SizeofLinger            = 0x8
+	SizeofIovec             = 0x10
 	SizeofIPMreq            = 0x8
 	SizeofIPMreqn           = 0xc
 	SizeofIPv6Mreq          = 0x14

unix/ztypes_linux_mipsle.go

@@ -376,6 +376,7 @@ const (
 	SizeofSockaddrALG       = 0x58
 	SizeofSockaddrVM        = 0x10
 	SizeofLinger            = 0x8
+	SizeofIovec             = 0x8
 	SizeofIPMreq            = 0x8
 	SizeofIPMreqn           = 0xc
 	SizeofIPv6Mreq          = 0x14

unix/ztypes_linux_ppc64.go

@@ -379,6 +379,7 @@ const (
 	SizeofSockaddrALG       = 0x58
 	SizeofSockaddrVM        = 0x10
 	SizeofLinger            = 0x8
+	SizeofIovec             = 0x10
 	SizeofIPMreq            = 0x8
 	SizeofIPMreqn           = 0xc
 	SizeofIPv6Mreq          = 0x14

unix/ztypes_linux_ppc64le.go

@@ -379,6 +379,7 @@ const (
 	SizeofSockaddrALG       = 0x58
 	SizeofSockaddrVM        = 0x10
 	SizeofLinger            = 0x8
+	SizeofIovec             = 0x10
 	SizeofIPMreq            = 0x8
 	SizeofIPMreqn           = 0xc
 	SizeofIPv6Mreq          = 0x14

unix/ztypes_linux_s390x.go

@@ -378,6 +378,7 @@ const (
 	SizeofSockaddrALG       = 0x58
 	SizeofSockaddrVM        = 0x10
 	SizeofLinger            = 0x8
+	SizeofIovec             = 0x10
 	SizeofIPMreq            = 0x8
 	SizeofIPMreqn           = 0xc
 	SizeofIPv6Mreq          = 0x14