btrfs-progs: cleanup block group helpers types

Use const char and remove stray prototypes.

Signed-off-by: David Sterba <dsterba@suse.com>

1 files changed, 2 insertions, 2 deletions

diff --git a/utils.h b/utils.h
index 5eb462b5..ff5966d1 100644
--- a/utils.h
+++ b/utils.h
@@ -220,8 +220,8 @@ static inline u64 btrfs_min_dev_size(u32 leafsize)
 }
 
 int find_next_key(struct btrfs_path *path, struct btrfs_key *key);
-char* btrfs_group_type_str(u64 flag);
-char* btrfs_group_profile_str(u64 flag);
+const char* btrfs_group_type_str(u64 flag);
+const char* btrfs_group_profile_str(u64 flag);
 
 /*
  * Get the length of the string converted from a u64 number.