[turbofan] Fix GraphC1Visualizer::PrintType().

src/compiler/graph-visualizer.cc

Index: src/compiler/graph-visualizer.cc
diff --git a/src/compiler/graph-visualizer.cc b/src/compiler/graph-visualizer.cc
index bb8ff6df84b5fbdad6eafa501abde00dfd13f696..97fb8322c333c6e972a606c98f450fef90c5aad1 100644
--- a/src/compiler/graph-visualizer.cc
+++ b/src/compiler/graph-visualizer.cc
@@ -541,11 +541,13 @@ void GraphC1Visualizer::PrintInputs(Node* node) {
 
 
 void GraphC1Visualizer::PrintType(Node* node) {
-  Bounds bounds = NodeProperties::GetBounds(node);
-  os_ << " type:";
-  bounds.upper->PrintTo(os_);
-  os_ << "..";
-  bounds.lower->PrintTo(os_);
+  if (NodeProperties::IsTyped(node)) {
+    Bounds bounds = NodeProperties::GetBounds(node);
+    os_ << " type:";
+    bounds.upper->PrintTo(os_);
+    os_ << "..";
+    bounds.lower->PrintTo(os_);
+  }
 }