jslint fix

jsonform.gadget.js

@@ -355,9 +355,8 @@
             y
           ]
         };
-      } else {
-        throw new Error("all reference must be resolved before merge run on first recursion level");
       }
+      throw new Error("all reference must be resolved before merge run on first recursion level");
     }
     if (x === true) {
       x = {};