Don't reference a potentially NULL pointer. (issue #9199 reported by klolik)

git-svn-id: https://origsvn.digium.com/svn/asterisk/branches/1.4@57770 65c4cc65-6c06-0410-ace0-fbb531ad65f3

res/res_jabber.c

@@ -383,7 +383,8 @@ static int aji_status_exec(struct ast_channel *chan, void *data)
 		r = buddy->resources;
 	if(!r)
 		ast_log(LOG_NOTICE, "Resource %s of buddy %s not found \n", resource, screenname);
-	stat = r->status;
+	else
+		stat = r->status;
 	sprintf(status, "%d", stat);
 	pbx_builtin_setvar_helper(chan, variable, status);
 	return 0;