MSW: fix assertion failure on Open() error paths (fix #3889)

Do not try to delete a callback and/or a mutex that do not exist.
The goto error paths still look a bit suspicious, someone should
double check them.

modules/video_output/msw/direct3d.c

@@ -184,7 +184,10 @@ static int Open(vlc_object_t *object)
 
     return VLC_SUCCESS;
 error:
-    Close(VLC_OBJECT(vd));
+    Direct3DClose(vd);
+    CommonClean(vd);
+    Direct3DDestroy(vd);
+    free(vd->sys);
     return VLC_EGENERIC;
 }
 

modules/video_output/msw/directx.c

@@ -236,7 +236,11 @@ static int Open(vlc_object_t *object)
     return VLC_SUCCESS;
 
 error:
-    Close(VLC_OBJECT(vd));
+    DirectXClose(vd);
+    CommonClean(vd);
+    if (sys->hddraw_dll)
+        FreeLibrary(sys->hddraw_dll);
+    free(sys);
     return VLC_EGENERIC;
 }