Original commit message from CVS:
* gst/matroska/matroska-mux.c: (gst_matroska_mux_init):
* gst/multipart/multipartmux.c: (gst_multipart_mux_init):
* gst/smpte/gstsmpte.c: (gst_smpte_init):
* gst/videomixer/videomixer.c: (gst_videomixer_init):
use DEBUG_FUNCPTR for collectpads