Add missing if-clause for residual_echo_likelihood_recent_max
Add missing if-clause for residual_echo_likelihood_recent_max

This is a follow-up to https://codereview.webrtc.org/2629563003/.

BUG=webrtc:6797
TBR=solenberg@webrtc.org

Review-Url: https://codereview.webrtc.org/2632243002
Cr-Original-Commit-Position: 972c6d2dc6dd5efdad1377c0d224e03eb8f276f7@{#16103}
Cr-Mirrored-From: https://chromium.googlesource.com/external/webrtc
Cr-Mirrored-Commit: 04a057b432e826855bf72d29bfad820e747719e9

Alkalyne/webrtctrunk,Alkalyne/webrtctrunk,Alkalyne/webrtctrunk,Alkalyne/webrtctrunk,Alkalyne/webrtctrunk,Alkalyne/webrtctrunk,Alkalyne/webrtctrunk,Alkalyne/webrtctrunk