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rtm++ bug 55627; handle case where base window closes out from under Downloading dialog; patch submitted by jrgm@netscape.com; r=law@netscape.com, sr=mscott@netscape.com
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@ -69,7 +69,7 @@ NS_IMETHODIMP nsBaseFilePicker::DOMWindowToWidget(nsIDOMWindowInternal *dw, nsIW
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nsCOMPtr<nsIPresShell> presShell;
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rv = docShell->GetPresShell(getter_AddRefs(presShell));
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if (NS_SUCCEEDED(rv)) {
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if (NS_SUCCEEDED(rv) && presShell) {
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nsCOMPtr<nsIViewManager> viewManager;
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rv = presShell->GetViewManager(getter_AddRefs(viewManager));
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