Revised error handling

- Functions warn() and die() replaced by GNU-like error(3) function
- Register cleanup() with atexit(3)
- Functions called by cleanup() are marked with CLEANUP and are not allowed to
  call exit(3)

1 files changed, 1 insertions, 1 deletions

diff --git a/thumbs.h b/thumbs.h
index cda2777..7b9987e 100644
--- a/thumbs.h
+++ b/thumbs.h
@@ -58,7 +58,7 @@ typedef struct {
 void tns_clean_cache(tns_t*);
 
 void tns_init(tns_t*, fileinfo_t*, const int*, int*, win_t*);
-void tns_free(tns_t*);
+CLEANUP void tns_free(tns_t*);
 
 bool tns_load(tns_t*, int, bool, bool);
 void tns_unload(tns_t*, int);