[Dillo-dev] [PATCH] initialise Layout::scrollIdleNotInterrupted

This is another valgrind pacifier; it squashes an error "Conditional jump or move depends on uninitialised value(s)" at "dw::core::Layout::updateAnchor() (layout.cc:474)" from "valgrind dw2-cur/test/dw-lists". Regards, Jeremy Henty