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Null check mShell in nsPresContext::MediaFeatureValuesChanged. (Bug 528832) r=bzbarsky
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@ -1539,7 +1539,8 @@ void
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nsPresContext::MediaFeatureValuesChanged(PRBool aCallerWillRebuildStyleData)
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{
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mPendingMediaFeatureValuesChanged = PR_FALSE;
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if (mShell->StyleSet()->MediumFeaturesChanged(this) &&
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if (mShell &&
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mShell->StyleSet()->MediumFeaturesChanged(this) &&
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!aCallerWillRebuildStyleData) {
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RebuildAllStyleData(nsChangeHint(0));
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}
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