wininet: InternetReadFileExA should check INTERNET_FLAG_ASYNC.

dlls/wininet/http.c

@@ -1733,9 +1733,7 @@ static DWORD HTTPREQ_ReadFileExA(WININETHANDLEHEADER *hdr, INTERNET_BUFFERSA *bu
 
     INTERNET_SendCallback(&req->hdr, req->hdr.dwContext, INTERNET_STATUS_RECEIVING_RESPONSE, NULL, 0);
 
-    /* FIXME: IRF_ASYNC may not be the right thing to test here;
-     * hIC->hdr.dwFlags & INTERNET_FLAG_ASYNC is probably better */
-    if (flags & IRF_ASYNC) {
+    if (hdr->dwFlags & INTERNET_FLAG_ASYNC) {
         DWORD available = 0;
 
         NETCON_query_data_available(&req->netConnection, &available);

dlls/wininet/tests/http.c

@@ -659,6 +659,8 @@ static void InternetReadFileExA_test(int flags)
             if (GetLastError() == ERROR_IO_PENDING)
             {
                 trace("InternetReadFileEx -> PENDING\n");
+                ok(flags & INTERNET_FLAG_ASYNC,
+                   "Should not get ERROR_IO_PENDING without INTERNET_FLAG_ASYNC\n");
                 CHECK_NOTIFIED(INTERNET_STATUS_RECEIVING_RESPONSE);
                 WaitForSingleObject(hCompleteEvent, INFINITE);
                 CHECK_NOTIFIED(INTERNET_STATUS_REQUEST_COMPLETE);