This CL adds explicit initialization of the FilterAnalyzer in AEC3. While the current code never uses any fields before they are initialized, it makes sense to be on the safe side and add initialization during construction. Bug: webrtc:11918 Change-Id: I467c4c8b8d6dd859a1b216baef28ac1e9d3f76c2 Reviewed-on: https://webrtc-review.googlesource.com/c/src/+/183764 Reviewed-by: Jesus de Vicente Pena <devicentepena@webrtc.org> Commit-Queue: Per Åhgren <peah@webrtc.org> Cr-Commit-Position: refs/heads/master@{#32069}