omxil_vout: Use the actual pixel size as frame size

Don't use the display size, which has taken the pixel aspect
ratio into account.

This still doesn't handle actually displaying anything with
non-square pixels correctly, though.
Signed-off-by: Martin Storsjö <martin@martin.st>

modules/codec/omxil/vout.c

@@ -189,8 +189,8 @@ static int Open(vlc_object_t *p_this)
 
 #define ALIGN(x, y) (((x) + ((y) - 1)) & ~((y) - 1))
 
-    def->format.video.nFrameWidth = vd->cfg->display.width;
-    def->format.video.nFrameHeight = vd->cfg->display.height;
+    def->format.video.nFrameWidth = vd->fmt.i_width;
+    def->format.video.nFrameHeight = vd->fmt.i_height;
     def->format.video.nStride = 0;
     def->format.video.nSliceHeight = 0;
     p_sys->port.definition.format.video.eColorFormat = OMX_COLOR_FormatYUV420PackedPlanar;