jfs: Deletion of an unnecessary check before the function call "unload_nls"

The unload_nls() function tests whether its argument is NULL and then
returns immediately. Thus the test around the call is not needed.

This issue was detected by using the Coccinelle software.
Signed-off-by: Markus Elfring <elfring@users.sourceforge.net>
Signed-off-by: Dave Kleikamp <dave.kleikamp@oracle.com>

fs/jfs/super.c

@@ -619,7 +619,6 @@ static int jfs_fill_super(struct super_block *sb, void *data, int silent)
 	iput(sbi->direct_inode);
 	sbi->direct_inode = NULL;
 out_unload:
-	if (sbi->nls_tab)
 	unload_nls(sbi->nls_tab);
 out_kfree:
 	kfree(sbi);