Fix merging adjacent hunks when expanding down
Fix merging adjacent hunks when expanding down

The unifiedDiffEnd value was incorrect because hunk2 in that scenario would be the adjacent hunk, and that one doesn't get its unifiedDiffEnd updated after the expansion :scream:

say25/desktop,say25/desktop,say25/desktop,j-f1/forked-desktop,shiftkey/desktop,say25/desktop,shiftkey/desktop,artivilla/desktop,j-f1/forked-desktop,j-f1/forked-desktop,artivilla/desktop,desktop/desktop,desktop/desktop,desktop/desktop,desktop/desktop,artivilla/desktop,artivilla/desktop,j-f1/forked-desktop,shiftkey/desktop,shiftkey/desktop