Fix trailing whitespace

Change-Id: I0515b5c8f6744fa501de88fa7808b7fc91981f0e
diff --git a/src/gprs_rlcmac.cpp b/src/gprs_rlcmac.cpp
index 7a98a25..e381b11 100644
--- a/src/gprs_rlcmac.cpp
+++ b/src/gprs_rlcmac.cpp
@@ -18,7 +18,7 @@
  * along with this program; if not, write to the Free Software
  * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
  */
- 
+
 #include <pcu_l1_if.h>
 #include <gprs_rlcmac.h>
 #include <bts.h>