cmd/compile: do not push functions literal node to Func.Dcl

They are skipped while processing Func.Dcl anyway.

This CL does not pass toolstash-check, because it reduces the length
of Func.Dcl length, while that length is used to generate autotmp
variables name.

Change-Id: I408183e62ce6c34e5f04c89814ebb9570957e37b
Reviewed-on: https://go-review.googlesource.com/c/go/+/252418
Run-TryBot: Cuong Manh Le <cuong.manhle.vn@gmail.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Matthew Dempsky <mdempsky@google.com>
diff --git a/src/cmd/compile/internal/gc/dcl.go b/src/cmd/compile/internal/gc/dcl.go
index 4f6fddd..6dc6f4d 100644
--- a/src/cmd/compile/internal/gc/dcl.go
+++ b/src/cmd/compile/internal/gc/dcl.go
@@ -90,7 +90,7 @@
 			lineno = n.Pos
 			Fatalf("automatic outside function")
 		}
-		if Curfn != nil {
+		if Curfn != nil && ctxt != PFUNC {
 			Curfn.Func.Dcl = append(Curfn.Func.Dcl, n)
 		}
 		if n.Op == OTYPE {