testsuite: Fix local labels [PR122378]

r16-4540-g80af807e52e4f4 exposed a bug in two testcases where the declaration of
local labels was wrongly commented out. That caused "duplicate label" errors.
Uncommenting declarations fixes it.

	PR middle-end/122378

gcc/testsuite/ChangeLog:

	* c-c++-common/gomp/attrs-metadirective-2.c: Uncomment local label
	declaration.
	* c-c++-common/gomp/metadirective-2.c: Likewise.

Author: parras

gcc/testsuite/c-c++-common/gomp/attrs-metadirective-2.c

@@ -62,7 +62,7 @@ main (void)
       when (device={arch("gcn")}: teams num_teams(256)),
       default (teams num_teams(4)))]]
   {
-    //__label__ l1, l2;
+    __label__ l1, l2;
 
     if (x)
       goto l1;

gcc/testsuite/c-c++-common/gomp/metadirective-2.c

@@ -61,7 +61,7 @@ main (void)
     when (device={arch("gcn")}: teams num_teams(256)) \
     default (teams num_teams(4))
   {
-    //__label__ l1, l2;
+    __label__ l1, l2;
 
     if (x)
       goto l1;