codec: nit: refactor - move from decode.go to reader.go

codec/decode.go

@@ -2006,7 +2006,3 @@ func decNakedReadRawBytes(dr decDriver, d *Decoder, n *decNaked, rawToString boo
 		n.l = dr.DecodeBytes(nil, false)
 	}
 }
-
-// register these here, so that staticcheck stops barfing
-var _ = (*bytesDecReader).readTo
-var _ = (*bytesDecReader).readUntil

codec/reader.go

@@ -1215,3 +1215,7 @@ func (z *decReaderSwitch) readUntilIO(in []byte, stop byte) (out []byte) {
 	}
 	return z.ri.readUntil(in, stop)
 }
+
+// register these here, so that staticcheck stops barfing
+var _ = (*bytesDecReader).readTo
+var _ = (*bytesDecReader).readUntil