#[no_mangle]
pub unsafe extern "C" fn dc_lookup_contact_id_by_addr(
context: *mut dc_context_t,
addr: *const c_char,
) -> u32
#[no_mangle]
pub unsafe extern "C" fn dc_lookup_contact_id_by_addr(
context: *mut dc_context_t,
addr: *const c_char,
) -> u32