login crash bug

src/engine/server/login/LoginServerMsgHandler.java

@@ -373,6 +373,11 @@ public class LoginServerMsgHandler implements NetMsgHandler {
                         clientConnection);
                 return;
             }
+            if (DbManager.PlayerCharacterQueries.IS_CHARACTER_NAME_UNIQUE(firstName) == false) {
+                LoginServerMsgHandler.sendInvalidNameMsg(firstName, lastName, MBServerStatics.INVALIDNAME_FIRSTNAME_UNAVAILABLE,
+                        clientConnection);
+                return;
+            }
             PlayerCharacter pc = PlayerCharacter.generatePCFromCommitNewCharacterMsg(session.getAccount(), commitNewCharacterMessage, clientConnection);
 
             if (pc == null) {