From e8635888a9d67eff399ad5d5fdded50dcc7e843a Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Adri=C3=A1n=20Medra=C3=B1o=20Calvo?=
 <adrian@medranocalvo.com>
Date: Thu, 27 Jul 2017 17:52:01 +0200
Subject: Prevent dangling pointer

The freed pointer would dangle as a result of the early exit, causing a
double-free upon next Blt::LineMarker::map invocation.
---
 generic/tkbltGrMarkerLine.C | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/generic/tkbltGrMarkerLine.C b/generic/tkbltGrMarkerLine.C
index 30ef70e..954d4dc 100644
--- a/generic/tkbltGrMarkerLine.C
+++ b/generic/tkbltGrMarkerLine.C
@@ -152,8 +152,10 @@ void LineMarker::map()
   LineMarkerOptions* ops = (LineMarkerOptions*)ops_;
 
   nSegments_ = 0;
-  if (segments_)
+  if (segments_) {
     delete [] segments_;
+    segments_ = NULL;
+  }
 
   if (!ops->worldPts || (ops->worldPts->num < 2))
     return;
-- 
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