lib: file-lock: Never decrease the wait time counter in file_lock_wait_end().

Prevents problems when time moves backwards.

diff --git a/src/lib/file-lock.c b/src/lib/file-lock.c
index b60fd226374921c8b082b323d689575ec374ff93..ab8a2d9b5e26a01b6fc13639005238c33e2891c2 100644 (file)
--- a/src/lib/file-lock.c
+++ b/src/lib/file-lock.c
@@ -524,6 +524,10 @@ void file_lock_wait_end(const char *lock_name)
        if (gettimeofday(&now, NULL) < 0)
                i_fatal("gettimeofday() failed: %m");
        long long diff = timeval_diff_usecs(&now, &lock_wait_start);
+       if (diff < 0) {
+               /* time moved backwards */
+               diff = 0;
+       }
        if (diff > file_lock_slow_warning_usecs) {
                if (file_lock_slow_warning_usecs < 0)
                        file_lock_wait_init_warning();