fix potential deadlock bug in log watcher

If too many watchers exist, fails to release logger stack lock.

1 files changed, 1 insertions, 0 deletions

diff --git a/logger.c b/logger.c
index c8cdea1..cb92d64 100644
--- a/logger.c
+++ b/logger.c
@@ -805,6 +805,7 @@ enum logger_add_watcher_ret logger_add_watcher(void *c, const int sfd, uint16_t
     logger_watcher *w = NULL;
     pthread_mutex_lock(&logger_stack_lock);
     if (watcher_count >= WATCHER_LIMIT) {
+        pthread_mutex_unlock(&logger_stack_lock);
         return LOGGER_ADD_WATCHER_TOO_MANY;
     }