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-rw-r--r--layout/base/nsDocumentViewer.cpp6
1 files changed, 5 insertions, 1 deletions
diff --git a/layout/base/nsDocumentViewer.cpp b/layout/base/nsDocumentViewer.cpp
index ab61daae87..d1cf9bf237 100644
--- a/layout/base/nsDocumentViewer.cpp
+++ b/layout/base/nsDocumentViewer.cpp
@@ -1143,6 +1143,8 @@ nsDocumentViewer::PermitUnload(PermitUnloadAction aAction,
*aPermitUnload = true;
+ NS_ENSURE_STATE(mContainer);
+
RefPtr<BrowsingContext> bc = mContainer->GetBrowsingContext();
if (!bc) {
return NS_OK;
@@ -1224,7 +1226,7 @@ MOZ_CAN_RUN_SCRIPT_BOUNDARY PermitUnloadResult
nsDocumentViewer::DispatchBeforeUnload() {
AutoDontWarnAboutSyncXHR disableSyncXHRWarning;
- if (!mDocument || mInPermitUnload || mInPermitUnloadPrompt) {
+ if (!mDocument || mInPermitUnload || mInPermitUnloadPrompt || !mContainer) {
return eAllowNavigation;
}
@@ -2546,6 +2548,8 @@ nsDocumentViewer::ForgetReloadEncoding() {
MOZ_CAN_RUN_SCRIPT_BOUNDARY NS_IMETHODIMP nsDocumentViewer::GetContentSize(
int32_t aMaxWidth, int32_t aMaxHeight, int32_t aPrefWidth, int32_t* aWidth,
int32_t* aHeight) {
+ NS_ENSURE_STATE(mContainer);
+
RefPtr<BrowsingContext> bc = mContainer->GetBrowsingContext();
NS_ENSURE_TRUE(bc, NS_ERROR_NOT_AVAILABLE);