[PATCH v2 0/1] MR5568: windowscodecs: Avoid implicit cast changing value.

This appear to be introduced with commit 12f73ed9d851. When This->stride is negative (bottom up image) it converts the multiplication to an UINT. Thus causing the pointer to be incorrect when y > 0. -- v2: windowscodecs: Avoid implicit cast changing value. https://gitlab.winehq.org/wine/wine/-/merge_requests/5568