### ESR Uplift Approval Request * **If this is not a sec:{high,crit} bug, please state case for ESR consideration**: Causes crash * **User impact if declined**: Attempting to viewsource a page can result in a tab crash if any extension using a streamfilter is installed. It will affect all attempts to use viewsource. * **Fix Landed on Version**: 85 * **Risk to taking this patch**: Low * **Why is the change risky/not risky? (and alternatives if risky)**: Small change, covered by unit tests. * **String or UUID changes made by this patch**:
Bug 1678734 Comment 32 Edit History
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### ESR Uplift Approval Request * **If this is not a sec:{high,crit} bug, please state case for ESR consideration**: Causes crash, regressed by patch that has been uplifted on ESR (https://hg.mozilla.org/releases/mozilla-esr78/rev/aa4b9610162034d8e4ce6ac9f721cfb509d2fea1). * **User impact if declined**: Attempting to viewsource a page can result in a tab crash if any extension using a streamfilter is installed. It will affect all attempts to use viewsource. * **Fix Landed on Version**: 85 * **Risk to taking this patch**: Low * **Why is the change risky/not risky? (and alternatives if risky)**: Small change, covered by unit tests. * **String or UUID changes made by this patch**: