Original commit message from CVS:
* ext/speex/gstspeexdec.c: (speex_dec_change_state):
* gst/interleave/deinterleave.c: (deinterleave_change_state):
* gst/interleave/interleave.c: (interleave_change_state):
* gst/wavenc/gstwavenc.c: (gst_wavenc_change_state):
More state change function fixes.