vis: use localtime_r(3) instead of localtime(3)

This makes it thread safe. While it is unlikely that we use threads in
the near future, it is sensible to avoid unnecessary global state.

1 files changed, 2 insertions, 1 deletions

diff --git a/vis-cmds.c b/vis-cmds.c
index 181321e..f5221d1 100644
--- a/vis-cmds.c
+++ b/vis-cmds.c
@@ -619,9 +619,10 @@ static bool cmd_earlier_later(Vis *vis, Win *win, Command *cmd, const char *argv
 		}
 	}
 
+	struct tm tm;
 	time_t state = text_state(txt);
 	char buf[32];
-	strftime(buf, sizeof buf, "State from %H:%M", localtime(&state));
+	strftime(buf, sizeof buf, "State from %H:%M", localtime_r(&state, &tm));
 	vis_info_show(vis, "%s", buf);
 
 	return pos != EPOS;