Core/Groups: Add missing parentesis from 5f4b58ea4b

Fixes issue 4194

--HG--
branch : trunk

src/server/game/Groups/Group.cpp

@@ -370,7 +370,8 @@ uint32 Group::RemoveMember(const uint64 &guid, const RemoveMethod &method)
     sScriptMgr.OnGroupRemoveMember(this, guid, method);
 
     // remove member and change leader (if need) only if strong more 2 members _before_ member remove
-    if (GetMembersCount() > (isBGGroup() || isLFGGroup()) ? 1u : 2u)           // in BG group case allow 1 members group
+    // BG or LFG groups allow 1 member group
+    if (GetMembersCount() > ((isBGGroup() || isLFGGroup()) ? 1u : 2u))
     {
         bool leaderChanged = _removeMember(guid);