Fix return type to be void.

dl/sp/src/arm/arm64/omxSP_FFTInv_CCSToR_F32.c

 /*
  *  Copyright (c) 2014 The WebRTC project authors. All Rights Reserved.
  *
  *  Use of this source code is governed by a BSD-style license
  *  that can be found in the LICENSE file in the root of the source
  *  tree. An additional intellectual property rights grant can be found
  *  in the file PATENTS.  All contributing project authors may
  *  be found in the AUTHORS file in the root of the source tree.
  */
 
@@ skipping 54 matching lines @@
 
 extern void armSP_FFTInv_CCSToR_F32_preTwiddleRadix2(
     const OMX_F32* pSrc,
     const OMX_FC32* pTwiddle,
     OMX_F32* pBuf,
     long N);
 
 /*
  * Scale FFT data by 1/|length|. |length| must be a power of two
  */
-static inline ScaleRFFTData(OMX_F32* fftData, unsigned length) {
+static inline void ScaleRFFTData(OMX_F32* fftData, unsigned length) {
   float32_t* data = (float32_t*)fftData;
   float32_t scale = 2.0f / length;
 
   if (length >= 4) {
     /*
      * Do 4 float elements at a time because |length| is always a
      * multiple of 4 when |length| >= 4.
      *
      * TODO(rtoy): Figure out how to process 8 elements at a time
      * using intrinsics or replace this with inline assembly.
@@ skipping 164 matching lines @@
         pComplexSrc, pComplexDst, pTwiddle, &subFFTNum, &subFFTSize);
   } else {
     /* Order = 0 */
     *pComplexDst = *pComplexSrc;
   }
 
   ScaleRFFTData(pDst, spec->N);
   return OMX_Sts_NoErr;
 }