Willem Jan Palenstijn a6ba9f150a SCUMM/ARM: Fix crashes in ARM asm costume renderer
It was possible to bypass the initialization of r11, and
mask was being read before the corresponding bounds check.

Thanks to fuzzie for analysis and LordHoto for testing.

This fixes bug #3500023 and a crash in the DOTT ending.
2012-04-04 08:54:58 +02:00
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