Fix crash in overdraw and change visualizers

It appears to be possible for node->element()->batch to be NULL

Task-number: QTBUG-43129
Change-Id: If6e4e265a02ee305bf3aa9cad387b7a73648367a
Reviewed-by: Gunnar Sletta <gunnar@sletta.org>

1 files changed, 2 insertions, 2 deletions

diff --git a/src/quick/scenegraph/coreapi/qsgbatchrenderer.cpp b/src/quick/scenegraph/coreapi/qsgbatchrenderer.cpp
index dbea0faa9a..b9266974e0 100644
--- a/src/quick/scenegraph/coreapi/qsgbatchrenderer.cpp
+++ b/src/quick/scenegraph/coreapi/qsgbatchrenderer.cpp
@@ -2815,7 +2815,7 @@ void Renderer::visualizeChangesPrepare(Node *n, uint parentChanges)
 void Renderer::visualizeChanges(Node *n)
 {
 
-    if (n->type() == QSGNode::GeometryNodeType && m_visualizeChanceSet.contains(n)) {
+    if (n->type() == QSGNode::GeometryNodeType && n->element()->batch && m_visualizeChanceSet.contains(n)) {
         uint dirty = m_visualizeChanceSet.value(n);
         bool tinted = (dirty & QSGNODE_DIRTY_PARENT) != 0;
 
@@ -2852,7 +2852,7 @@ void Renderer::visualizeChanges(Node *n)
 
 void Renderer::visualizeOverdraw_helper(Node *node)
 {
-    if (node->type() == QSGNode::GeometryNodeType) {
+    if (node->type() == QSGNode::GeometryNodeType && node->element()->batch) {
         VisualizeShader *shader = static_cast<VisualizeShader *>(m_shaderManager->visualizeProgram);
         QSGGeometryNode *gn = static_cast<QSGGeometryNode *>(node->sgNode);