[XAttrIndexer] Avoid unnecessary reindexing on XAttr changes
The XAttrIndexer is called when the ctime only changes, e.g. whan editing Comments or Tags. Content changes are handled by the ModifiedFileIndexer.
cc: @ngraham
The XAttrIndexer is called when the ctime only changes, e.g. whan editing Comments or Tags. Content changes are handled by the ModifiedFileIndexer.
cc: @ngraham