New helper - current_umask()

current->fs->umask is what most of fs_struct users are doing.
Put that into a helper function.

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
diff --git a/fs/hfsplus/options.c b/fs/hfsplus/options.c
index bab7f8d..3fcbb0e 100644
--- a/fs/hfsplus/options.c
+++ b/fs/hfsplus/options.c
@@ -48,7 +48,7 @@
 
 	opts->creator = HFSPLUS_DEF_CR_TYPE;
 	opts->type = HFSPLUS_DEF_CR_TYPE;
-	opts->umask = current->fs->umask;
+	opts->umask = current_umask();
 	opts->uid = current_uid();
 	opts->gid = current_gid();
 	opts->part = -1;