fix build

TBR=austin
OCL=32496
CL=32496

test/bugs/bug136.go

@@ -10,13 +10,6 @@ func main() {
 	L: ;  // ';' terminates empty statement => L does not apply to for loop
 	for i := 0; i < 10; i++ {
 		println(i);
-		break L;  // ERROR "L"
-	}
-
-	L1: { // L1 labels block => L1 does not apply to for loop
-		for i := 0; i < 10; i++ {
-			println(i);
-			break L1;  // ERROR "L1"
-		}
+		break L  // L does not apply to for loop
 	}
 }