ext/wavpack/gstwavpackenc.c: Fix caps set on buffers and template caps (output is...

ext/wavpack/gstwavpackenc.c: Fix caps set on buffers and template caps (output is framed) and make them match (#35166...

Original commit message from CVS:
* ext/wavpack/gstwavpackenc.c: (gst_wavpack_enc_init),
(gst_wavpack_enc_set_wp_config), (gst_wavpack_enc_push_block),
(gst_wavpack_enc_chain), (gst_wavpack_enc_rewrite_first_block),
(gst_wavpack_enc_sink_event):
Fix caps set on buffers and template caps (output is framed)
and make them match (#351663); use GST_WARNING_OBJECT instead of
GST_ELEMENT_WARNING; simplify push_block(); do some small
clean-ups here and there; fix memleak (#351663).