freetdm: Add Ricardo to list of contributors in ftmod_sangoma_ss7

libs/freetdm/src/ftmod/ftmod_sangoma_ss7/ftmod_sangoma_ss7_handle.c

@@ -29,6 +29,11 @@
  * LIABILITY|WHETHER IN CONTRACT|STRICT LIABILITY|OR TORT (INCLUDING
  * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
  * SOFTWARE|EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ * Contributors: 
+ *
+ * Ricardo Barroetaveña <rbarroetavena@anura.com.ar>
+ *
  */
 
 /* INCLUDE ********************************************************************/