user32: Always initialize module in load_desktop_driver.

Wine-Bug: https://bugs.winehq.org/show_bug.cgi?id=48742
Signed-off-by: Jefferson Carpenter <jeffersoncarpenter2@gmail.com>
Signed-off-by: Alexandre Julliard <julliard@winehq.org>

dlls/user32/driver.c

@@ -85,6 +85,7 @@ static BOOL load_desktop_driver( HWND hwnd, HMODULE *module )
     else
     {
         size = sizeof(driver_load_error);
+        *module = NULL;
         RegQueryValueExA( hkey, "DriverError", NULL, NULL, (BYTE *)driver_load_error, &size );
     }
     RegCloseKey( hkey );