Fix a typo in friends list and ignore list loading.

This fixes the bugs which appear when you have more than 50 entries on friends or ignore list.
For example: You have 40 friends and 20 ignores, it's 60. But the core loads just 50 entries so some of them not loaded.
Fixes issue #134.

Patch by johnholiver.

--HG--
branch : trunk

src/game/SocialMgr.cpp

@@ -313,8 +313,8 @@ PlayerSocial *SocialMgr::LoadFromDB(QueryResult_AutoPtr result, uint32 guid)
 
         social->m_playerSocialMap[friend_guid] = FriendInfo(flags, note);
 
-        // client limit
-        if(social->m_playerSocialMap.size() >= 50)
+        // client's friends list and ignore list limit
+        if(social->m_playerSocialMap.size() >= (SOCIALMGR_FRIEND_LIMIT + SOCIALMGR_IGNORE_LIMIT))
             break;
     }
     while (result->NextRow());