[AD] ASSERT conflict

["Eric Botcazou" <ebotcazou@xxxxxxxxxx>]

The first ASSERT in _al_sane_realloc() seems to conflict with the semantics
of the function:

void *_al_sane_realloc(void *ptr, size_t size)
{
   void *tmp_ptr;
   ASSERT(ptr);
   ASSERT(size >= 0);

   tmp_ptr = NULL;

   if (ptr && size) {
      tmp_ptr = realloc(ptr, size);
      if (!tmp_ptr && ptr) free(ptr);
   }
   else if (!size) {
      tmp_ptr = NULL;
      if (ptr) free(ptr);
   }
   else if (!ptr) {
      tmp_ptr = malloc(size);
   }

   return tmp_ptr;
}

It triggers in the test program compiled with DJGPP. I removed it for the
4.1.2 WIP release.

--
Eric Botcazou