ClangCodeModel: Fix crash on git diff/show

currentEditorChanged is emitted also for none TextEditors, so
check the qobject casted TextDocument before accessing it.

Change-Id: I57080221bec34b879f21e022029524818ea92569
Reviewed-by: Christian Stenger <christian.stenger@qt.io>

1 files changed, 5 insertions, 4 deletions

diff --git a/src/plugins/clangcodemodel/clangcurrentdocumentfilter.cpp b/src/plugins/clangcodemodel/clangcurrentdocumentfilter.cpp
index d5a84b611d..adc4507b88 100644
--- a/src/plugins/clangcodemodel/clangcurrentdocumentfilter.cpp
+++ b/src/plugins/clangcodemodel/clangcurrentdocumentfilter.cpp
@@ -176,11 +176,12 @@ void ClangCurrentDocumentFilter::onCurrentEditorChanged(Core::IEditor *newCurren
         m_currentEditor = newCurrent;
         Core::IDocument *document = m_currentEditor->document();
         QTC_ASSERT(document, return;);
-        auto *textDocument = qobject_cast<TextEditor::TextDocument *>(document);
-        m_currentPath = textDocument->filePath().toString();
-    } else {
-        reset();
+        if (auto *textDocument = qobject_cast<TextEditor::TextDocument *>(document)) {
+            m_currentPath = textDocument->filePath().toString();
+            return;
+        }
     }
+    reset();
 }
 
 } // namespace ClangCodeModel