address klocwork issue (#1749)

4c15371e · Robert Kimball · GitHub · ed0855fe · 4c15371e
Unverified Commit 4c15371e authored Oct 04, 2018 by Robert Kimball Committed by GitHub Oct 04, 2018
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visualize_tree.cpp src/ngraph/pass/visualize_tree.cpp +4 -1

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--- a/src/ngraph/pass/visualize_tree.cpp
+++ b/src/ngraph/pass/visualize_tree.cpp
@@ -157,7 +157,10 @@ void pass::VisualizeTree::render() const
        ss << "dot -T" << get_file_ext() << " " << tmp_file << " -o " << m_name;
        auto cmd = ss.str();
        auto stream = popen(cmd.c_str(), "r");
-        pclose(stream);
+        if (stream)
+        {
+            pclose(stream);
+        }
        remove(tmp_file.c_str());
    }