librsvg:render_document: Crash in _blit_xrgb32_lerp_spans

Detailed Report: https://oss-fuzz.com/testcase?key=4774130042077184 Project: librsvg Fuzzing Engine: libFuzzer Fuzz Target: renderdocument Job Type: libfuzzerasanlibrsvg Platform Id: linux Crash Type: UNKNOWN READ Crash Address: 0x7ff010e196b0 Crash State: blitxrgb32lerpspans...