comparison vamp-json/VampJson.h @ 233:82f86151bc4b

The compiler in the Travis environment seems to have trouble with this
initialiser, change it

     toStaticOutputDescriptor(json11::Json j, std::string &err) {
 
         StaticOutputDescriptor sd;
         if (!j.is_object()) {
             err = "object expected for static output descriptor";
-            return {};
+            return sd;
         }
 
         sd.typeURI = j["typeURI"].string_value();
         return sd;
     }