Snippets for python:av 19.0.1 from FreeBSD 151amd64

Sourced from https://pkg-status.freebsd.org/beefy23/data/latest-per-pkg/py312-av/19.0.1/151amd64-default.log.

src/av/video/frame.c:34013:21: warning: code will never be executed [-Wunreachable-code]

src/av/video/frame.c:34310:21: warning: code will never be executed [-Wunreachable-code]

src/av/filter/graph.c:5819:62: warning: comparison of integers of different signs: 'int' and 'unsigned int' [-Wsign-compare]
 5819 |   for (__pyx_t_3 = __pyx_v_self->_nb_filters_seen; __pyx_t_3 < __pyx_t_2; __pyx_t_3+=1) {
      |                                                    ~~~~~~~~~ ^ ~~~~~~~~~

src/av/audio/resampler.c:8004:9: warning: call to undeclared function '__Pyx_BEGIN_CRITICAL_SECTION'; ISO C99 and later do not support implicit function declarations [-Wimplicit-function-declaration]
 8004 |         __Pyx_BEGIN_CRITICAL_SECTION(smaller_dict);
      |         ^

src/av/audio/resampler.c:8024:9: warning: call to undeclared function '__Pyx_END_CRITICAL_SECTION'; ISO C99 and later do not support implicit function declarations [-Wimplicit-function-declaration]
 8024 |         __Pyx_END_CRITICAL_SECTION();
      |         ^

src/av/container/input.c:5599:72: warning: comparison of integers of different signs: 'int' and 'unsigned int' [-Wsign-compare]
 5599 |       __pyx_t_17 = (__pyx_cur_scope->__pyx_v_read_packet->stream_index < __pyx_cur_scope->__pyx_v_nb_streams);
      |                     ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ ^ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~