From f9ef7efd39d4148d38086beca8a7827aeec45bcf Mon Sep 17 00:00:00 2001
From: Damiano Bortolato <damiano.bortolato@lnl.infn.it>
Date: Wed, 25 Dec 2019 01:15:55 +0100
Subject: [PATCH] BUGFIX: deselecting all markers freezes the gui.

A index check on current_marker value was missing.
---
 plot.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/plot.c b/plot.c
index 69c9ee6..af18742 100644
--- a/plot.c
+++ b/plot.c
@@ -1493,6 +1493,8 @@ draw_all(bool flush)
 void
 redraw_marker(int marker, int update_info)
 {
+  if (marker < 0)
+    return;
   // mark map on new position of marker
   markmap_marker(marker);