Function switch_event_get_header_ptr

pub unsafe extern "C" fn switch_event_get_header_ptr(
    event: *mut switch_event_t,
    header_name: *const c_char,
) -> *mut switch_event_header_t

\brief Retrieve a header value from an event \param event the event to read the header from \param header_name the name of the header to read \return the value of the requested header