Fix a reversed-logic ast_strlen_zero.

This problem was pointed out on the asterisk-users list
by Jim Dickenson



git-svn-id: https://origsvn.digium.com/svn/asterisk/branches/1.6.0@161490 65c4cc65-6c06-0410-ace0-fbb531ad65f3

main/manager.c

@@ -2163,7 +2163,7 @@ static int action_originate(struct mansession *s, const struct message *m)
 	int format = AST_FORMAT_SLINEAR;
 
 	pthread_t th;
-	if (!ast_strlen_zero(name)) {
+	if (ast_strlen_zero(name)) {
 		astman_send_error(s, m, "Channel not specified");
 		return 0;
 	}