re PR go/47113 (go_field_alignment: field set but not used)

	PR go/47113
	* go-backend.c: (go_field_alignment): Add ATTRIBUTE_UNUSED to
	variable ‘field’ .

From-SVN: r168373

gcc/go/ChangeLog

+2010-12-31  Joern Rennecke  <amylaar@spamcop.net>
+
+	PR go/47113
+	* go-backend.c: (go_field_alignment): Add ATTRIBUTE_UNUSED to
+	variable ‘field’ .
+
 2010-12-21  Ian Lance Taylor  <iant@google.com>
 
 	* Make-lang.in (check-go): Remove.

gcc/go/go-backend.c

@@ -53,7 +53,7 @@ go_field_alignment (tree t)
 
 #ifdef ADJUST_FIELD_ALIGN
   {
-    tree field;
+    tree field ATTRIBUTE_UNUSED;
     field = build_decl (UNKNOWN_LOCATION, FIELD_DECL, NULL, t);
     v = ADJUST_FIELD_ALIGN (field, v);
   }