Add proper #include to tools/widl/parser.l

[Gerald Pfeifer]

A trivial fix.

Gerald

ChangeLog:
#include <unistd.h> which is required for unlink().

Index: widl/parser.l
===================================================================
RCS file: /home/wine/wine/tools/widl/parser.l,v
retrieving revision 1.2
diff -u -3 -p -r1.2 parser.l
--- widl/parser.l	20 Jul 2002 19:00:52 -0000	1.2
+++ widl/parser.l	24 Jul 2002 17:33:03 -0000
@@ -38,6 +38,7 @@ uuid	{hexd}{8}-{hexd}{4}-{hexd}{4}-{hexd
 #include <string.h>
 #include <ctype.h>
 #include <assert.h>
+#include <unistd.h>

 #include "widl.h"
 #include "utils.h"