Fix implicit fallthrough warnings.

Test: make checkbuild
Bug: 112564944
Change-Id: I0810479d070cf797623d2da449587d77e36f9754

media/libaudioprocessing/tests/Android.mk

@@ -20,6 +20,8 @@ LOCAL_C_INCLUDES := \
 LOCAL_SRC_FILES := \
     resampler_tests.cpp
 
+LOCAL_HEADER_LIBRARIES := libbase_headers
+
 LOCAL_MODULE := resampler_tests
 
 LOCAL_MODULE_TAGS := tests
@@ -49,6 +51,8 @@ LOCAL_SHARED_LIBRARIES := \
     liblog \
     libutils \
 
+LOCAL_HEADER_LIBRARIES := libbase_headers
+
 LOCAL_MODULE := test-mixer
 
 LOCAL_MODULE_TAGS := optional

media/libaudioprocessing/tests/test_utils.h

@@ -23,6 +23,7 @@
 
 #include <log/log.h>
 
+#include <android-base/macros.h>
 #include <audio_utils/sndfile.h>
 
 #ifndef ARRAY_SIZE
@@ -77,14 +78,14 @@ static inline int parseCSV(const char *string, std::vector<int>& values)
                 }
                 return numValues;
             }
-            // fall through
+            FALLTHROUGH_INTENDED;
         case ',':
             if (hadDigit) {
                 hadDigit = false;
                 numValues++;
                 break;
             }
-            // fall through
+            FALLTHROUGH_INTENDED;
         default:
             return -1;
         }