Merge "Update comment from review."

  size_t stack_size;      /* The size of the stack, zero indicate an unknown stack size. */

  const char* map_name;   /* The name of the map to which this pc belongs, NULL indicates the pc doesn't belong to a known map. */

  uintptr_t map_offset;   /* pc relative to the start of the map, only valid if map_name is not NULL. */

  char* proc_name;        /* The function name associated with this pc, NULL if no not found. */

  char* proc_name;        /* The function name associated with this pc, NULL if not found. */

  uintptr_t proc_offset;  /* pc relative to the start of the procedure, only valid if proc_name is not NULL. */

} backtrace_frame_data_t;