message: AGC2: Fix GetAvailableCpuFeatures()
  Handle the case in which neither WEBRTC_ARCH_X86_FAMILY nor
  WEBRTC_HAS_NEON are defined.
  Cr-Commit-Position: refs/heads/master@{#32786}
diff: @@ -48,6 +48,10 @@ AvailableCpuFeatures GetAvailableCpuFeatures() {
  return {/*sse2=*/false,
  /*avx2=*/false,
  /*neon=*/true};
  +#else
  + return {/*sse2=*/false,
  + /*avx2=*/false,
  + /*neon=*/false};
  #endif
  }
  