From 276b013e96339354e3310349b7329d821366da82 Mon Sep 17 00:00:00 2001
From: Denis Rouzaud <denis.rouzaud@gmail.com>
Date: Mon, 24 Aug 2015 15:22:03 +0200
Subject: [PATCH] Fix #13224 add joins crashes if no other vector layer exists

---
 src/app/qgsjoindialog.cpp | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/app/qgsjoindialog.cpp b/src/app/qgsjoindialog.cpp
index 94473d621f79..3293c2daaa1e 100644
--- a/src/app/qgsjoindialog.cpp
+++ b/src/app/qgsjoindialog.cpp
@@ -47,7 +47,7 @@ QgsJoinDialog::QgsJoinDialog( QgsVectorLayer* layer, QList<QgsMapLayer*> already
   mCacheInMemoryCheckBox->setChecked( true );
 
   QgsMapLayer *joinLayer = mJoinLayerComboBox->currentLayer();
-  if ( joinLayer->isValid() )
+  if ( joinLayer && joinLayer->isValid() )
   {
     mJoinFieldComboBox->setLayer( joinLayer );
     joinedLayerChanged( joinLayer );