Fix how add_sdp_by_uuid passes the uuid to SDP_AddSequence

Fix how add_sdp_by_uuid passes the uuid to SDP_AddSequence

SDP_AddSequence expects to dereference the passed
pointer and find a pointer there, and that pointer
pointing to UINT8s.

Before, we were passing &type_buf, which gives the
address of the first UINT8 in the array on the stack.
This meant SDP_AddSequence was treating the first few
bytes of the uuid as a pointer to somewhere, leading
to a segfault when it tried to follow it.