squashme: attempt fixing urlnum warning

/Users/runner/work/curl/curl/src/tool_writeout.c: In function 'writeLong':
/Users/runner/work/curl/curl/src/tool_writeout.c:244:37: error: comparison is always true due to limited range of data type [-Werror=type-limits]
       if((unsigned long)per->urlnum <= LONG_MAX) {
                                     ^~

src/tool_writeout.c

@@ -246,7 +246,7 @@ static int writeLong(FILE *stream, const struct writeoutvar *wovar,
       valid = true;
       break;
     case VAR_URLNUM:
-      if((unsigned long)per->urlnum <= LONG_MAX) {
+      if((unsigned long)per->urlnum <= (unsigned long)LONG_MAX) {
         longinfo = (long)per->urlnum;
         valid = true;
       }