Minor bugfix to alleviate the issue of ACS being mistaken for WHILE, within existing WHILE loop.
As a first submission to RISC OS, this minor patch addresses the issue where, within a WHILE loop, an ACS token can be mistaken for another WHILE token.
As a first submission to RISC OS, this minor patch addresses the issue where, within a WHILE loop, an ACS token can be mistaken for another WHILE token.