Comment # 8 on bug 98914 from Jörg-Volker Peetz

Thanks for caring and your git lesson.

The culprit is the change in src/gallium/auxiliary/vl/vl_zscan.c .
I double-checked by starting from mesa-13.0.2 and just reverted the type change
in that file back to "signed i;" which is enough to repair this regression.