Fix typo

Found by gcc: operation on 'preview_ptr' may be undefined [-Wsequence-point]

diff --git a/src/insets/InsetExternal.cpp b/src/insets/InsetExternal.cpp
index a62100e9b00fb19caaa49492718eb4f13923ff3f..cb86df4fc71a54ec6bc504e2ee7e7177532bdb1e 100644 (file)
--- a/src/insets/InsetExternal.cpp
+++ b/src/insets/InsetExternal.cpp
@@ -617,7 +617,7 @@ void InsetExternal::setParams(InsetExternalParams const & p)
                break;
        case PREVIEW_INSTANT: {
                renderer_.reset(new RenderMonitoredPreview(this));
-               RenderMonitoredPreview * preview_ptr = preview_ptr = renderer_->asMonitoredPreview();
+               RenderMonitoredPreview * preview_ptr = renderer_->asMonitoredPreview();
                preview_ptr->fileChanged(bind(&InsetExternal::fileChanged, this));
                if (preview_ptr->monitoring())
                        preview_ptr->stopMonitoring();