[Opus] Update to v1.2.1

third_party/opus/src/Makefile.unix

 #################### COMPILE OPTIONS #######################
 
 # Uncomment this for fixed-point build
 #FIXED_POINT=1
 
 # It is strongly recommended to uncomment one of these
 # VAR_ARRAYS: Use C99 variable-length arrays for stack allocation
 # USE_ALLOCA: Use alloca() for stack allocation
 # If none is defined, then the fallback is a non-threadsafe global array
 CFLAGS := -DUSE_ALLOCA $(CFLAGS)
@@ skipping 79 matching lines @@
 
 OPUSDEMO_SRCS_C = src/opus_demo.c
 OPUSDEMO_OBJS := $(patsubst %.c,%$(OBJSUFFIX),$(OPUSDEMO_SRCS_C))
 
 TESTOPUSAPI_SRCS_C = tests/test_opus_api.c
 TESTOPUSAPI_OBJS := $(patsubst %.c,%$(OBJSUFFIX),$(TESTOPUSAPI_SRCS_C))
 
 TESTOPUSDECODE_SRCS_C = tests/test_opus_decode.c
 TESTOPUSDECODE_OBJS := $(patsubst %.c,%$(OBJSUFFIX),$(TESTOPUSDECODE_SRCS_C))
 
-TESTOPUSENCODE_SRCS_C = tests/test_opus_encode.c
+TESTOPUSENCODE_SRCS_C = tests/test_opus_encode.c tests/opus_encode_regressions.c
 TESTOPUSENCODE_OBJS := $(patsubst %.c,%$(OBJSUFFIX),$(TESTOPUSENCODE_SRCS_C))
 
 TESTOPUSPADDING_SRCS_C = tests/test_opus_padding.c
 TESTOPUSPADDING_OBJS := $(patsubst %.c,%$(OBJSUFFIX),$(TESTOPUSPADDING_SRCS_C))
 
 OPUSCOMPARE_SRCS_C = src/opus_compare.c
 OPUSCOMPARE_OBJS := $(patsubst %.c,%$(OBJSUFFIX),$(OPUSCOMPARE_SRCS_C))
 
 TESTS := test_opus_api test_opus_decode test_opus_encode test_opus_padding
 
@@ skipping 39 matching lines @@
 force:
 
 clean:
         rm -f opus_demo$(EXESUFFIX) opus_compare$(EXESUFFIX) $(TARGET) \
                 test_opus_api$(EXESUFFIX) test_opus_decode$(EXESUFFIX) \
                 test_opus_encode$(EXESUFFIX) test_opus_padding$(EXESUFFIX) \
                 $(OBJS) $(OPUSDEMO_OBJS) $(OPUSCOMPARE_OBJS) $(TESTOPUSAPI_OBJS) \
                 $(TESTOPUSDECODE_OBJS) $(TESTOPUSENCODE_OBJS) $(TESTOPUSPADDING_OBJS)
 
 .PHONY: all lib clean force check