Snippets for opus 1.6 from Fedora ppc64le

Sourced from https://kojipkgs.fedoraproject.org/packages/opus/1.6/2.fc44/data/logs/ppc64le/build.log.

• ../celt/tests/test_unit_mdct.c:118:17: warning: '_cfg.trig' may be used uninitialized [-Wmaybe-uninitialized]
    118 |     mdct_lookup _cfg;
        |                 ^
  

• ../silk/dec_API.c:375:9: warning: 'nSamplesOutDec' may be used uninitialized [-Wmaybe-uninitialized]
    375 |         silk_memcpy( psDec->sStereo.sMid, &samplesOut1_tmp[ 0 ][ nSamplesOutDec ], 2 * sizeof( opus_int16 ) );
        |         ^
  

• ../silk/quant_LTP_gains.c:102:35: warning: 'gain_Q7' may be used uninitialized [-Wmaybe-uninitialized]
    102 |             sum_log_gain_tmp_Q7 = silk_max(0, sum_log_gain_tmp_Q7
        |                                   ^
  

• ../src/opus_projection_decoder.c:184:3: warning: 'buf.1_77' may be used uninitialized [-Wmaybe-uninitialized]
    184 |   mapping_matrix_init(get_dec_demixing_matrix(st), channels, nb_input_streams, 0,
        |   ^