Minor bug on Windows Direct X driver

In Windows with the Direct X driver, calling SDL_CreateYUVOverlay() the
returned surface->pitches vector contains bogus values until the
first SDL_LockYUVOverlay() call.

The manpage says that you must call SDL_LockYUVOverlay() to
access surface->pixels, it doesn’t mention surface->pitches.–
Andrea Mazzoleni
935A 2D3C 5C70 BCD6 CB0C ED89 7C19 4321 6340 3F6D