Fix for bug #2930488 Select All doesn't work if there's a rectangular selection.
Fix for bug #2930488 Select All doesn't work if there's a rectangular
selection.

keperlia/foo-wsh-panel-mod.scintilla,windoze/scintilla,windoze/scintilla,keperlia/foo-wsh-panel-mod.scintilla,windoze/scintilla,windoze/scintilla,windoze/scintilla,windoze/scintilla,windoze/scintilla,keperlia/foo-wsh-panel-mod.scintilla,keperlia/foo-wsh-panel-mod.scintilla,keperlia/foo-wsh-panel-mod.scintilla,keperlia/foo-wsh-panel-mod.scintilla,windoze/scintilla