smaller fixes

zimbraSingle.php

@@ -516,14 +516,7 @@ function zimbraSingle_CreateAccount($params)
         );
         return false;
     }
-    logModuleCall(
-        'zimbrasingle',
-        __FUNCTION__,
-        $params,
-        "Debug",
-        $accountExists
-    );
-    if($accountExists) {
+    if(!$accountExists) {
         return 'Account already exist';
     }
     $attrs = array();