urlmon: Add support for synchronous binding.

dlls/urlmon/binding.c

@@ -1375,6 +1375,7 @@ HRESULT start_binding(LPCWSTR url, IBindCtx *pbc, REFIID riid, void **ppv)
 {
     Binding *binding = NULL;
     HRESULT hres;
+    MSG msg;
 
     *ppv = NULL;
 
@@ -1403,6 +1404,15 @@ HRESULT start_binding(LPCWSTR url, IBindCtx *pbc, REFIID riid, void **ppv)
         return hres;
     }
 
+    while(!(binding->bindf & BINDF_ASYNCHRONOUS) &&
+          binding->download_state != END_DOWNLOAD) {
+        MsgWaitForMultipleObjects(0, NULL, FALSE, 5000, QS_POSTMESSAGE);
+        while (PeekMessageW(&msg, binding->notif_hwnd, WM_USER, WM_USER+117, PM_REMOVE|PM_NOYIELD)) {
+            TranslateMessage(&msg);
+            DispatchMessageW(&msg);
+        }
+    }
+
     if(binding->stream->init_buf) {
         if(binding->request_locked)
             IInternetProtocol_UnlockRequest(binding->protocol);