ext/faad/gstfaad.c: There's no guarantee that caps was set to something, and if it did, the function called to fill t...

Original commit message from CVS:
* ext/faad/gstfaad.c: (gst_faad_chain):
There's no guarantee that caps was set to something, and if it did, the
function called to fill that variable actually sets the caps on the
sourcpad, so we call gst_pad_alloc_buffer_and_set_caps() using
GST_PAD_CAPS(faad->srcpad).