Explicitly set GDK_SCROLL_MASK as recent gtk+ versions require it for scrolling to work
Explicitly set GDK_SCROLL_MASK as recent gtk+ versions require it for scrolling to work

Bug #671305.

thestinger/vte-ng,saitoha/vte-sixel,asivokon/vte-fx,jessevdk/vte,pjm0616/vte,saitoha/vte-sixel,rvu95/vte,jessevdk/vte,rvu95/vte,asivokon/vte-fx,pjm0616/vte,saitoha/vte-sixel,asivokon/vte-fx,flaxandteal/gasket-vte,rvu95/vte,flaxandteal/gasket-vte,flaxandteal/gasket-vte,thestinger/vte-ng,rvu95/vte,asivokon/vte-fx,jessevdk/vte,flaxandteal/gasket-vte,pjm0616/vte,jessevdk/vte,thestinger/vte-ng