libavcodec/sonic.c:422: error: Null Dereference
  pointer `state` last assigned on line 420 could be null and is dereferenced by call to `memcpy()` at line 422, column 5.

libavcodec/sonic.c:416:1: start of procedure modified_levinson_durbin()
414. // actual whitened result as it goes.
415. 
416. static void modified_levinson_durbin(int *window, int window_entries,
     ^
417.         int *out, int out_entries, int channels, int *tap_quant)
418. {

libavcodec/sonic.c:420:5: 
418. {
419.     int i;
420.     int *state = av_mallocz(4* window_entries);
         ^
421. 
422.     memcpy(state, window, 4* window_entries);

libavutil/mem.c:132:1: start of procedure av_mallocz()
  130. }
  131. 
  132. void *av_mallocz(unsigned int size)
       ^
  133. {
  134.     void *ptr = av_malloc(size);

libavutil/mem.c:134:5: 
  132. void *av_mallocz(unsigned int size)
  133. {
  134.     void *ptr = av_malloc(size);
           ^
  135.     if (ptr)
  136.         memset(ptr, 0, size);

libavutil/mem.c:42:1: start of procedure av_malloc()
    40.    linker will do it automatically */
    41. 
    42. void *av_malloc(unsigned int size)
        ^
    43. {
    44.     void *ptr;

libavutil/mem.c:50:8: Taking true branch
    48. 
    49.     /* let's disallow possible ambiguous cases */
    50.     if(size > (INT_MAX-16) )
               ^
    51.         return NULL;
    52. 

libavutil/mem.c:51:9: 
    49.     /* let's disallow possible ambiguous cases */
    50.     if(size > (INT_MAX-16) )
    51.         return NULL;
                ^
    52. 
    53. #ifdef CONFIG_MEMALIGN_HACK

libavutil/mem.c:92:1: return from a call to av_malloc
    90. #endif
    91.     return ptr;
    92. }
        ^
    93. 
    94. void *av_realloc(void *ptr, unsigned int size)

libavutil/mem.c:135:9: Taking false branch
  133. {
  134.     void *ptr = av_malloc(size);
  135.     if (ptr)
               ^
  136.         memset(ptr, 0, size);
  137.     return ptr;

libavutil/mem.c:137:5: 
  135.     if (ptr)
  136.         memset(ptr, 0, size);
  137.     return ptr;
           ^
  138. }
  139. 

libavutil/mem.c:138:1: return from a call to av_mallocz
  136.         memset(ptr, 0, size);
  137.     return ptr;
  138. }
       ^
  139. 
  140. char *av_strdup(const char *s)

libavcodec/sonic.c:422:5: 
420.     int *state = av_mallocz(4* window_entries);
421. 
422.     memcpy(state, window, 4* window_entries);
         ^
423. 
424.     for (i = 0; i < out_entries; i++)
