shithub: mp3dec

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check callback exists

--- a/minimp3_ex.h

+++ b/minimp3_ex.h

@@ -123,6 +123,8 @@

 void mp3dec_iterate_buf(const uint8_t *buf, size_t buf_size, MP3D_ITERATE_CB callback, void *user_data)

 {

+    if (!callback)

+        return;

     mp3dec_frame_info_t frame_info;

     memset(&frame_info, 0, sizeof(frame_info));

     /* skip id3v2 */