[Opus] Update to v1.2.1

third_party/opus/src/celt/celt_lpc.h

 /* Copyright (c) 2009-2010 Xiph.Org Foundation
    Written by Jean-Marc Valin */
 /*
    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.
 
@@ skipping 27 matching lines @@
 #define LPC_ORDER 24
 
 void _celt_lpc(opus_val16 *_lpc, const opus_val32 *ac, int p);
 
 void celt_fir_c(
          const opus_val16 *x,
          const opus_val16 *num,
          opus_val16 *y,
          int N,
          int ord,
-         opus_val16 *mem,
          int arch);
 
 #if !defined(OVERRIDE_CELT_FIR)
-#define celt_fir(x, num, y, N, ord, mem, arch) \
-    (celt_fir_c(x, num, y, N, ord, mem, arch))
+#define celt_fir(x, num, y, N, ord, arch) \
+    (celt_fir_c(x, num, y, N, ord, arch))
 #endif
 
 void celt_iir(const opus_val32 *x,
          const opus_val16 *den,
          opus_val32 *y,
          int N,
          int ord,
          opus_val16 *mem,
          int arch);
 
 int _celt_autocorr(const opus_val16 *x, opus_val32 *ac,
          const opus_val16 *window, int overlap, int lag, int n, int arch);
 
 #endif /* PLC_H */