[PATCH] isofs "default NLS charset not used" fix

From: Marek Szuba <scriptkiddie@wp.pl>

Use the configured default NLS rather than hardwire it.

fs/isofs/inode.c

@@ -802,7 +802,7 @@ static int isofs_fill_super(struct super_block *s, void *data, int silent)
 
 #ifdef CONFIG_JOLIET
 	if (joliet_level && opt.utf8 == 0) {
-		char * p = opt.iocharset ? opt.iocharset : "iso8859-1";
+		char * p = opt.iocharset ? opt.iocharset : CONFIG_NLS_DEFAULT;
 		sbi->s_nls_iocharset = load_nls(p);
 		if (! sbi->s_nls_iocharset) {
 			/* Fail only if explicit charset specified */