Add back return statement after FATAL()

Some compilers do not accept that non-void functions end with FATAL()
instead of a return statement. This change adds back a few return
statements that were removed in r8463.

BUG=4344
R=phoglund@webrtc.org

Review URL: https://webrtc-codereview.appspot.com/42519004

Cr-Commit-Position: refs/heads/master@{#8509}
git-svn-id: http://webrtc.googlecode.com/svn/trunk@8509 4adac7df-926f-26a2-2b94-8c16560cd09d
diff --git a/webrtc/modules/audio_coding/main/acm2/audio_coding_module_impl.cc b/webrtc/modules/audio_coding/main/acm2/audio_coding_module_impl.cc
index 694900a..542aaba 100644
--- a/webrtc/modules/audio_coding/main/acm2/audio_coding_module_impl.cc
+++ b/webrtc/modules/audio_coding/main/acm2/audio_coding_module_impl.cc
@@ -736,6 +736,7 @@
 int AudioCodingModuleImpl::SetReceivedEstimatedBandwidth(int bw) {
   CriticalSectionScoped lock(acm_crit_sect_);
   FATAL() << "Dead code?";
+  return -1;
 //  return codecs_[current_send_codec_idx_]->SetEstimatedBandwidth(bw);
 }
 
@@ -1365,6 +1366,7 @@
   }
 
   FATAL() << "Dead code?";
+  return -1;
 //  return codecs_[current_send_codec_idx_]->ConfigISACBandwidthEstimator(
 //      frame_size_ms, rate_bit_per_sec, enforce_frame_size);
 }
@@ -1426,6 +1428,7 @@
     return -1;
   }
   FATAL() << "Dead code?";
+  return -1;
 //  int status;
 //  status = codecs_[current_send_codec_idx_]->REDPayloadISAC(isac_rate,
 //                                                            isac_bw_estimate,