cmd/compile: sort OAS2* declarations

Change-Id: Idd3acf5f808705c608cd4e5877bc93e1626d9a58
Reviewed-on: https://go-review.googlesource.com/c/go/+/179238
Run-TryBot: Matthew Dempsky <[email protected]>
TryBot-Result: Gobot Gobot <[email protected]>
Reviewed-by: Robert Griesemer <[email protected]>

Author: mdempsky

src/cmd/compile/internal/gc/class_string.go

@@ -599,10 +599,10 @@ const (
 	OSTR2RUNES    // Type(Left) (Type is []rune, Left is a string)
 	OAS           // Left = Right or (if Colas=true) Left := Right
 	OAS2          // List = Rlist (x, y, z = a, b, c)
+	OAS2DOTTYPE   // List = Rlist (x, ok = I.(int))
 	OAS2FUNC      // List = Rlist (x, y = f())
-	OAS2RECV      // List = Rlist (x, ok = <-c)
 	OAS2MAPR      // List = Rlist (x, ok = m["foo"])
-	OAS2DOTTYPE   // List = Rlist (x, ok = I.(int))
+	OAS2RECV      // List = Rlist (x, ok = <-c)
 	OASOP         // Left Etype= Right (x += y)
 	OCALL         // Left(List) (function call, method call or type conversion)