Patch from Artem Baguinski to protect against ascent of 0.
Patch from Artem Baguinski to protect against ascent of 0.

R1dO/scintilla_clone,R1dO/scintilla_clone,R1dO/scintilla_clone,R1dO/scintilla_clone,R1dO/scintilla_clone,R1dO/scintilla_clone,R1dO/scintilla_clone,R1dO/scintilla_clone