When:
- i == 0 (at end of current POINTBLOCK),
- numFullPtBlocks == 1 (only one more POINTBLOCK left) and
- iCurPtBlock == 0 (last block contains no points),
Valgrind rightfully complained about an invalid read:
Conditional jump or move depends on uninitialised value(s)
at 0x517B08B: PolygonRegion(QPoint const*, int, int) (qregion.cpp:3480)
Fixed by setting 'next' to nullptr when !numFullPtBlocks OR !iCurPtBlock.
Change-Id: If5225fdfa66f2910a8aafb675cd02b40c0a81ad9
Reviewed-by: Olivier Goffart <ogoffart@woboq.com>
0f9148ac9b