update: make the job id unsigned

Since the return value cannot be -1 anymore, we can make it unsigned.

2 files changed, 7 insertions, 7 deletions

diff --git a/src/update.c b/src/update.c
index 7dc50b5aa..68e030b78 100644
--- a/src/update.c
+++ b/src/update.c
@@ -46,15 +46,15 @@ static size_t update_paths_nr;
 
 static pthread_t update_thr;
 
-static const int update_task_id_max = 1 << 15;
+static const unsigned update_task_id_max = 1 << 15;
 
-static int update_task_id;
+static unsigned update_task_id;
 
 static struct mpd_song *delete;
 
 static struct condition delete_cond;
 
-int isUpdatingDB(void)
+unsigned isUpdatingDB(void)
 {
 	return (progress != UPDATE_PROGRESS_IDLE) ? update_task_id : 0;
 }
@@ -410,12 +410,12 @@ static void spawn_update_task(char *path)
 	DEBUG("spawned thread for update job id %i\n", update_task_id);
 }
 
-int directory_update_init(char *path)
+unsigned directory_update_init(char *path)
 {
 	assert(pthread_equal(pthread_self(), main_task));
 
 	if (progress != UPDATE_PROGRESS_IDLE) {
-		int next_task_id;
+		unsigned next_task_id;
 
 		if (!path)
 			return 0;
diff --git a/src/update.h b/src/update.h
index 5c7277e32..0842c0df0 100644
--- a/src/update.h
+++ b/src/update.h
@@ -20,14 +20,14 @@
 #ifndef UPDATE_H
 #define UPDATE_H
 
-int isUpdatingDB(void);
+unsigned isUpdatingDB(void);
 
 /*
  * returns the positive update job ID on success,
  * returns 0 if busy
  * @path will be freed by this function and should not be reused
  */
-int directory_update_init(char *path);
+unsigned directory_update_init(char *path);
 
 void reap_update_task(void);