Fix uninitialized variables causing breakage with -Werror.

	* lambda.c (maybe_add_lambda_conv_op): Initialize direct_argvec and call
	to nullptr to avoid breakage with -Werror.

From-SVN: r202554

gcc/cp/ChangeLog

+2013-09-13  Adam Butcher  <adam@jessamine.co.uk>
+
+	* lambda.c (maybe_add_lambda_conv_op): Initialize direct_argvec and call
+	to nullptr to avoid breakage with -Werror.
+
 2013-09-12  Brooks Moses  <bmoses@google.com>
 
 	PR driver/42955

gcc/cp/lambda.c

@@ -792,8 +792,8 @@ maybe_add_lambda_conv_op (tree type)
      particular, parameter pack expansions are marked PACK_EXPANSION_LOCAL_P in
      the body CALL, but not in DECLTYPE_CALL.  */
 
-  vec<tree, va_gc> *direct_argvec;
-  tree decltype_call = 0, call;
+  vec<tree, va_gc> *direct_argvec = 0;
+  tree decltype_call = 0, call = 0;
   tree fn_result = TREE_TYPE (TREE_TYPE (callop));
 
   if (generic_lambda_p)