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Bug 521608 - nsCanvasRenderingContext2D::GetPresShell may crash or leak, r=vlad, sr=jst

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This commit is contained in:
Olli Pettay 2009-10-24 18:02:26 +03:00
parent 8b68dba6c0
commit 572d40007e
1 changed files with 8 additions and 5 deletions
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13
content/canvas/src/nsCanvasRenderingContext2D.cpp
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@ -488,14 +488,17 @@ protected:
* Gets the pres shell from either the canvas element or the doc shell
*/
nsIPresShell *GetPresShell() {
nsIPresShell *presShell = nsnull;
nsCOMPtr<nsIContent> content = do_QueryInterface(mCanvasElement);
if (content) {
presShell = content->GetOwnerDoc()->GetPrimaryShell();
} else if (mDocShell) {
mDocShell->GetPresShell(&presShell);
nsIDocument* ownerDoc = content->GetOwnerDoc();
return ownerDoc ? ownerDoc->GetPrimaryShell() : nsnull;
}
return presShell;
if (mDocShell) {
nsCOMPtr<nsIPresShell> shell;
mDocShell->GetPresShell(getter_AddRefs(shell));
return shell.get();
}
return nsnull;
}
// text