From 4b3134b843d4e211f9c93ee01178d431b5dce79f Mon Sep 17 00:00:00 2001
From: Renaud G <renaud@rolisteam.org>
Date: Tue, 16 Oct 2018 18:44:46 +0200
Subject: prevent crash

---
 node/variablenode.cpp | 2 +-
 node/variablenode.h   | 2 +-
 2 files changed, 2 insertions(+), 2 deletions(-)

diff --git a/node/variablenode.cpp b/node/variablenode.cpp
index d636a94..b1c9e3b 100644
--- a/node/variablenode.cpp
+++ b/node/variablenode.cpp
@@ -8,7 +8,7 @@ VariableNode::VariableNode()
 void VariableNode::run(ExecutionNode *previous)
 {
     m_previousNode = previous;
-    if(m_data->size()>m_index)
+    if((nullptr != m_data) && (m_data->size()>m_index))
     {
       auto value= (*m_data)[m_index];
       value = ParsingToolBox::getLatestNode(value);
diff --git a/node/variablenode.h b/node/variablenode.h
index 1df9acd..c74e7ff 100644
--- a/node/variablenode.h
+++ b/node/variablenode.h
@@ -27,7 +27,7 @@ public:
 
 private:
     quint64 m_index;
-    std::vector<ExecutionNode*>* m_data;
+    std::vector<ExecutionNode*>* m_data = nullptr;
 };
 
 #endif // VARIABLENODE_H
-- 
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