Masayuki Nakano d7fdaf7cf8 Bug 1272490 nsHTMLEditRules::ReapplyCachedStyles() should do nothing if nsIEditor::GetSelection() returns nullptr r=Ehsan
nsHTMLEditRules::ReapplyCachedStyles() may be called after the document is removed from the DOM tree.  For example, the document can be removed from the tree even during handling an edit operation if the web contents uses DOMMutationEvent. In such case, nsIEditor::GetSelection() returns nullptr and it should do nothing.

MozReview-Commit-ID: Jk3eGalAPhB

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extra : rebase_source : 54b8eb0ace2c656a68cd8aaf0edd3d1177b127ff
2016-05-17 11:47:39 +09:00
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