Always return 0 inidcating that socket path would not be truncated when

running on windows. Apparently Cygwin tries to emulate UNIX Socket and thus
fails to create one.

mysql-test/lib/My/Platform.pm

@@ -96,6 +96,8 @@ sub check_socket_path_length {
   my ($path)= @_;
   my $truncated= 0;
 
+  return 0 if IS_WINDOWS;
+
   require IO::Socket::UNIX;
 
   my $sock = new IO::Socket::UNIX