winemac.drv: Use the default frequency in ChangeDisplaySettingsExW() …

…if dmDisplayFrequency is 1.

0 or 1 in dmDisplayFrequency means to use the default frequency.

Fix Disgaea PC and Ostriv failing to launch in exclusive fullscreen mode.

Signed-off-by: Zhiyi Zhang <zzhang@codeweavers.com>
Signed-off-by: Alexandre Julliard <julliard@winehq.org>

dlls/winemac.drv/display.c

@@ -893,7 +893,9 @@ LONG CDECL macdrv_ChangeDisplaySettingsEx(LPCWSTR devname, LPDEVMODEW devmode,
             if (devmode->dmPelsHeight != height)
                 continue;
         }
-        if ((devmode->dmFields & DM_DISPLAYFREQUENCY) && devmode->dmDisplayFrequency != 0)
+        if ((devmode->dmFields & DM_DISPLAYFREQUENCY) &&
+            devmode->dmDisplayFrequency != 0 &&
+            devmode->dmDisplayFrequency != 1)
         {
             double refresh_rate = CGDisplayModeGetRefreshRate(display_mode);
             if (!refresh_rate)