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Bug 843543 - Add a null-check after ShowPrintDialog to avoid crashing. r=smaug

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This commit is contained in:
Mats Palmgren 2013-02-24 15:09:34 +01:00
parent 56ff9b26dd
commit 3cfffd0412
1 changed files with 4 additions and 1 deletions
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5
layout/printing/nsPrintEngine.cpp
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@ -616,13 +616,16 @@ nsPrintEngine::DoCommonPrint(bool aIsPrintPreview,
// ShowPrintDialog triggers an event loop which means we can't assume
// that the state of this->{anything} matches the state we've checked
// above. Including that a given {thing} is non null.
if (!mPrt) {
return NS_ERROR_FAILURE;
}
if (NS_SUCCEEDED(rv)) {
// since we got the dialog and it worked then make sure we
// are telling GFX we want to print silent
printSilently = true;
if (mPrt && mPrt->mPrintSettings) {
if (mPrt->mPrintSettings) {
// The user might have changed shrink-to-fit in the print dialog, so update our copy of its state
mPrt->mPrintSettings->GetShrinkToFit(&mPrt->mShrinkToFit);
}