[PATCH] warning in yyerror()

[Toby Peterson]

Patch: http://cvs.opendarwin.org/index.cgi/~checkout~/dports/devel/ 
bison/files/patch-data__yacc.c

When YYMAXDEPTH is 0, yyparse() generates a warning (about a  
comparison always being true). yystacksize is unsigned, which causes  
the warning only when YYMAXDEPTH is <= 0.

- Toby