Made it so WATCH will not respond with an erroneous reply if the parameter was simply + or -

Changes

@@ -338,3 +338,5 @@
 - Added documentation for link::ciphers to unreal32docs.html (#0002019) reported by Bugz.
 - Updated documentation to reflect that cmode +M allows voiced users to talk, not just
   registered users (#0002020) reported by crazy.
+- Made it so WATCH will not respond with an erroneous reply if the parameter was simply + or -
+  (#0002017) reported by GouraudShading.

src/s_serv.c

@@ -439,6 +439,8 @@ CMD_FUNC(m_watch)
 		 */
 		if (*s == '+')
 		{
+			if (!*(s+1))
+				continue;
 			if (do_nick_name(s + 1))
 			{
 				if (sptr->watches >= MAXWATCH)
@@ -463,6 +465,8 @@ CMD_FUNC(m_watch)
 		 */
 		if (*s == '-')
 		{
+			if (!*(s+1))
+				continue;
 			del_from_watch_hash_table(s + 1, sptr);
 			show_watch(sptr, s + 1, RPL_WATCHOFF, RPL_WATCHOFF);