Restore Qt 4.7 behaviour by adding a content type to POST requests that don't have one.

src/core/network.cpp

@@ -91,6 +91,12 @@ QNetworkReply* NetworkAccessManager::createRequest(
       QCoreApplication::applicationName(),
       QCoreApplication::applicationVersion()).toUtf8());
 
+  if (op == QNetworkAccessManager::PostOperation &&
+      !new_request.header(QNetworkRequest::ContentTypeHeader).isValid()) {
+    new_request.setHeader(QNetworkRequest::ContentTypeHeader,
+                          "application/x-www-form-urlencoded");
+  }
+
   // Prefer the cache unless the caller has changed the setting already
   if (request.attribute(QNetworkRequest::CacheLoadControlAttribute).toInt()
       == QNetworkRequest::PreferNetwork) {

src/main.cpp

@@ -245,6 +245,7 @@ int main(int argc, char *argv[]) {
 #ifdef HAVE_LIBLASTFM
   lastfm::ws::ApiKey = LastFMService::kApiKey;
   lastfm::ws::SharedSecret = LastFMService::kSecret;
+  lastfm::setNetworkAccessManager(new NetworkAccessManager);
 #endif
 
   CommandlineOptions options(argc, argv);