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-rw-r--r--widget/gtk/WidgetStyleCache.cpp4
1 files changed, 4 insertions, 0 deletions
diff --git a/widget/gtk/WidgetStyleCache.cpp b/widget/gtk/WidgetStyleCache.cpp
index 7e5488b49..301d93db3 100644
--- a/widget/gtk/WidgetStyleCache.cpp
+++ b/widget/gtk/WidgetStyleCache.cpp
@@ -626,6 +626,10 @@ GetWidget(WidgetNodeType aWidgetType)
GtkWidget* widget = sWidgetStorage[aWidgetType];
if (!widget) {
widget = CreateWidget(aWidgetType);
+ // Some widgets (MOZ_GTK_COMBOBOX_SEPARATOR for instance) may not be
+ // available or implemented.
+ if (!widget)
+ return nullptr;
// In GTK versions prior to 3.18, automatic invalidation of style contexts
// for widgets was delayed until the next resize event. Gecko however,
// typically uses the style context before the resize event runs and so an