[Opus] Update to v1.2.1

third_party/opus/src/silk/float/energy_FLP.c

 /***********************************************************************
 Copyright (c) 2006-2011, Skype Limited. All rights reserved.
 Redistribution and use in source and binary forms, with or without
 modification, are permitted provided that the following conditions
 are met:
 - Redistributions of source code must retain the above copyright notice,
 this list of conditions and the following disclaimer.
 - Redistributions in binary form must reproduce the above copyright
 notice, this list of conditions and the following disclaimer in the
 documentation and/or other materials provided with the distribution.
@@ skipping 19 matching lines @@
 #endif
 
 #include "SigProc_FLP.h"
 
 /* sum of squares of a silk_float array, with result as double */
 double silk_energy_FLP(
     const silk_float    *data,
     opus_int            dataSize
 )
 {
-    opus_int  i, dataSize4;
+    opus_int i;
     double   result;
 
     /* 4x unrolled loop */
     result = 0.0;
-    dataSize4 = dataSize & 0xFFFC;
-    for( i = 0; i < dataSize4; i += 4 ) {
+    for( i = 0; i < dataSize - 3; i += 4 ) {
         result += data[ i + 0 ] * (double)data[ i + 0 ] +
                   data[ i + 1 ] * (double)data[ i + 1 ] +
                   data[ i + 2 ] * (double)data[ i + 2 ] +
                   data[ i + 3 ] * (double)data[ i + 3 ];
     }
 
     /* add any remaining products */
     for( ; i < dataSize; i++ ) {
         result += data[ i ] * (double)data[ i ];
     }
 
     silk_assert( result >= 0.0 );
     return result;
 }