[parser] Fix bug in scanner that caused parse errors in certain recursive macro call scenarios.
[parser] Fix bug in scanner that caused parse errors in certain recursive macro call scenarios.

POV-Ray/povray,POV-Ray/povray,LeForgeron/povray,LeForgeron/povray,POV-Ray/povray,POV-Ray/povray,POV-Ray/povray,wfpokorny/povray,POV-Ray/povray,c-lipka/povray,LeForgeron/povray,POV-Ray/povray,LeForgeron/povray,wfpokorny/povray,wfpokorny/povray,LeForgeron/povray,LeForgeron/povray,c-lipka/povray,wfpokorny/povray,c-lipka/povray,wfpokorny/povray,LeForgeron/povray,LeForgeron/povray,wfpokorny/povray,wfpokorny/povray,c-lipka/povray