silence a warning in ast-devmode on a potentially uninitialized var.

At first sight (but the function is very large so i am not 100% sure)
the code seems correct, so maybe my compiler is just not smart
enough to figure that out at the optimization level it has.

Not worthwhile merging to 1.4 i believe.



git-svn-id: https://origsvn.digium.com/svn/asterisk/trunk@77156 65c4cc65-6c06-0410-ace0-fbb531ad65f3

channels/chan_iax2.c

@@ -6988,7 +6988,7 @@ static int socket_process(struct iax2_thread *thread)
 	struct iax_frame *fr;
 	struct iax_frame *cur;
 	struct ast_frame f = { 0, };
-	struct ast_channel *c;
+	struct ast_channel *c = NULL;
 	struct iax2_dpcache *dp;
 	struct iax2_peer *peer;
 	struct iax_ies ies;