Check pointer before using it. Fixing assert when image is open from command line.

52c1cfcf · Eugene Ingerman · 300a4bc5 · 52c1cfcf
Commit 52c1cfcf authored Sep 19, 2016 by Eugene Ingerman
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plugins/dockers/defaultdockers/kis_layer_box.cpp plugins/dockers/defaultdockers/kis_layer_box.cpp +2 -1

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--- a/plugins/dockers/defaultdockers/kis_layer_box.cpp
+++ b/plugins/dockers/defaultdockers/kis_layer_box.cpp
@@ -397,7 +397,8 @@ void KisLayerBox::updateUI()
    KisNodeSP activeNode = m_nodeManager->activeNode();

    if (activeNode != m_activeNode) {
-        m_activeNode->disconnect(this);
+        if( !m_activeNode.isNull() )
+            m_activeNode->disconnect(this);
        m_activeNode = activeNode;

        KisKeyframeChannel *opacityChannel = activeNode->getKeyframeChannel(KisKeyframeChannel::Opacity.id(), false);