one more small tweak for thread-safety of TRACE_FRAMES

git-svn-id: https://origsvn.digium.com/svn/asterisk/branches/1.2@38547 65c4cc65-6c06-0410-ace0-fbb531ad65f3

frame.c

@@ -835,11 +835,11 @@ static int show_frame_stats(int fd, int argc, char *argv[])
 	int x=1;
 	if (argc != 3)
 		return RESULT_SHOWUSAGE;
+	ast_mutex_lock(&framelock);
 	ast_cli(fd, "     Framer Statistics     \n");
 	ast_cli(fd, "---------------------------\n");
 	ast_cli(fd, "Total allocated headers: %d\n", headers);
 	ast_cli(fd, "Queue Dump:\n");
-	ast_mutex_lock(&framelock);
 	for (f=headerlist; f; f = f->next) {
 		ast_cli(fd, "%d.  Type %d, subclass %d from %s\n", x++, f->frametype, f->subclass, f->src ? f->src : "<Unknown>");
 	}