Core/Command: Fix 'character titles' command, patch by Shadowstep

closes issue 3939

--HG--
branch : trunk

src/server/game/Chat/Commands/Level2.cpp

@@ -4510,6 +4510,9 @@ bool ChatHandler::HandleTitlesSetMaskCommand(const char* args)
 
 bool ChatHandler::HandleCharacterTitlesCommand(const char* args)
 {
+    if (!*args)
+        return false;
+
     Player* target;
     if (!extractPlayerTarget((char*)args,&target))
         return false;