And don't forget to return on the error condition

git-svn-id: https://origsvn.digium.com/svn/asterisk/branches/1.4@150301 65c4cc65-6c06-0410-ace0-fbb531ad65f3

main/manager.c

@@ -1501,6 +1501,7 @@ static int action_getvar(struct mansession *s, const struct message *m)
 		char *copy = ast_strdupa(varname);
 		if (!c) {
 			astman_send_error(s, m, "No such channel");
+			return 0;
 		}
 		ast_func_read(c, copy, workspace, sizeof(workspace));
 		varval = workspace;