Changed check whether growth needed in SString insert and append to not grow when new length is 1 less than size.
Changed check whether growth needed in SString insert and
append to not grow when new length is 1 less than size.

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