C: Fix lexwarnsym on windows

use sizesize for size_t (STRLEN lexwarn size), no longsize.
Fixes #418

Signed-off-by: Reini Urban <[email protected]>

Author: Sten22

Makefile.PL

@@ -115,8 +115,9 @@ sub write_b_c_config {
     # easier hash key/value slices only came with 5.22
     for my $s (qw(archname cc ccflags
                   d_c99_variadic_macros d_dlopen d_isinf d_isnan d_longdbl dlext
-                  i_dlfcn ivdformat ivsize longsize mad nvgformat ptrsize static_ext
-                  usecperl usedl useithreads uselongdouble usemultiplicity usemymalloc uvuformat))
+                  i_dlfcn ivdformat ivsize longsize mad nvgformat ptrsize sizesize
+	          static_ext usecperl usedl useithreads uselongdouble usemultiplicity
+	          usemymalloc uvuformat))
     {
         if ($CORE) {
             my $v = $Config::Config{$s};

lib/B/C.pm

@@ -3414,8 +3414,8 @@ sub lexwarnsym {
       $init->add( sprintf( "%s = newSVpvn(%s, %u);", $sym, $cstring, $cur));
     } else {
       # if 8 use UVSIZE, if 4 use LONGSIZE
-      my $t = ($Config{longsize} == 8) ? "J" : "L";
-      my ($iv) = unpack($t, $pv); # unsigned longsize
+      my $t = ($Config{sizesize} == 8) ? "J" : "L";
+      my ($iv) = unpack($t, $pv); # size_t
       if ($iv >= 0 and $iv <= 2) { # specialWARN: single STRLEN
         $decl->add( sprintf( "Static const STRLEN* %s = %d;", $sym, $iv ));
         $isint = 1;