From 606bcd35143d09cca5b1ec45bdb5b13236e4376b Mon Sep 17 00:00:00 2001
From: Nyall Dawson <nyall.dawson@gmail.com>
Date: Thu, 3 Oct 2019 14:50:49 +1000
Subject: [PATCH] Fix crash in topology checker plugin after a check is
 canceled during index preparation

---
 src/plugins/topology/topolTest.cpp | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/src/plugins/topology/topolTest.cpp b/src/plugins/topology/topolTest.cpp
index 3775846e3926..4b0fc6dda921 100644
--- a/src/plugins/topology/topolTest.cpp
+++ b/src/plugins/topology/topolTest.cpp
@@ -1363,8 +1363,7 @@ QgsSpatialIndex *topolTest::createIndex( QgsVectorLayer *layer, const QgsRectang
 
     if ( testCanceled() )
     {
-      delete index;
-      return nullptr;
+      return index;
     }
 
     if ( f.hasGeometry() )