winhttp: Add stub implementation for WinHttpQueryDataAvailable.

dlls/winhttp/main.c

@@ -191,3 +191,14 @@ BOOL WINAPI WinHttpQueryOption (HINTERNET hInternet, DWORD dwOption, LPVOID lpBu
     SetLastError(ERROR_NOT_SUPPORTED);
     return FALSE;
 }
+
+/***********************************************************************
+ *          WinHttpQueryDataAvailable (winhttp.@)
+ */
+BOOL WINAPI WinHttpQueryDataAvailable (HINTERNET hInternet, LPDWORD lpdwNumberOfBytesAvailable)
+{
+    FIXME("stub\n");
+
+    SetLastError(ERROR_NOT_SUPPORTED);
+    return FALSE;
+}

dlls/winhttp/winhttp.spec

@@ -15,7 +15,7 @@
 @ stdcall WinHttpOpen(wstr long wstr wstr long)
 @ stdcall WinHttpOpenRequest(ptr wstr wstr wstr wstr ptr long)
 @ stub WinHttpQueryAuthSchemes
-@ stub WinHttpQueryDataAvailable
+@ stdcall WinHttpQueryDataAvailable(ptr ptr)
 @ stub WinHttpQueryHeaders
 @ stdcall WinHttpQueryOption(ptr long ptr ptr)
 @ stub WinHttpReadData