Chase compiler warnings.

Are you sure this works on all platforms, with different sizes of int and void*? Why not intptr_t? However this file is generated, it comes from the runtime library of the parsertools parser generator http://core.tcl.tk/tcllib/dir?ci=9782ee1566d04a8b5c38bf23d10b18aa98f37134&name=modules/pt/rde_critcl 
 Andreas Kupries was working on it recently, and soon the new parsers will make it into VecTcl. Your changes in this file will soon be overwritten unless you review parsertools.