Add address sanitizer and undefined behavior sanitizer (#951)

c-api-examples/add-punctuation-c-api.c

@@ -43,8 +43,8 @@ int32_t main() {
   const char *texts[] = {
       "这是一个测试你好吗How are you我很好thank you are you ok谢谢你",
       "我们都是木头人不会说话不会动",
-      "The African blogosphere is rapidly expanding bringing more voices "
-      "online in the form of commentaries opinions analyses rants and poetry",
+      ("The African blogosphere is rapidly expanding bringing more voices "
+       "online in the form of commentaries opinions analyses rants and poetry"),
   };
 
   int32_t n = sizeof(texts) / sizeof(const char *);

c-api-examples/decode-file-c-api.c

@@ -179,8 +179,6 @@ int32_t main(int32_t argc, char *argv[]) {
 
 #define N 3200  // 0.2 s. Sample rate is fixed to 16 kHz
 
-  int16_t buffer[N];
-  float samples[N];
   fprintf(stderr, "sample rate: %d, num samples: %d, duration: %.2f s\n",
           wave->sample_rate, wave->num_samples,
           (float)wave->num_samples / wave->sample_rate);

c-api-examples/streaming-hlg-decode-file-c-api.c

@@ -65,8 +65,6 @@ int32_t main() {
 // simulate streaming. You can choose an arbitrary N
 #define N 3200
 
-  int16_t buffer[N];
-  float samples[N];
   fprintf(stderr, "sample rate: %d, num samples: %d, duration: %.2f s\n",
           wave->sample_rate, wave->num_samples,
           (float)wave->num_samples / wave->sample_rate);