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layout: CascadeSheet: check aSheet is non-null before use.

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fix crash when adblock plus is blocking a stylesheet.
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roytam1 2025-08-03 09:28:30 +08:00
commit a2da19760e
1 changed files with 1 additions and 1 deletions
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2
layout/style/nsCSSRuleProcessor.cpp
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@ -663,7 +663,7 @@ CascadeRuleEnumFunc(css::Rule* aRule, void* aData)
/* static */ bool
nsCSSRuleProcessor::CascadeSheet(CSSStyleSheet* aSheet, CascadeLayer* aLayer)
{
if (aSheet->IsApplicable() &&
if (aSheet && aSheet->IsApplicable() &&
aSheet->UseForPresentation(aLayer->mPresContext,
aLayer->mCacheKey) &&
aSheet->mInner) {