The check if we need to add an Int32ToDouble node in fixDoubleEdge() doesn't check for all "integer" cases.
This is from <rdar://problem/12645632>
Committed r140201: <http://trac.webkit.org/changeset/140201>
This broke editing/selection/move-by-word-visually-multi-line.html. It fails with a release build and crashes with a debug build. Tracked in https://bugs.webkit.org/show_bug.cgi?id=107340.