MdeModulePkg:removes the unreachable ‘break’ instruction after a ‘return’ instruction in the switch().

Signed-off-by: Olivier Martin <olivier.martin@arm.com>
Signed-off-by: Feng Tian <feng.tian@intel.com>
Reviewed-by: Liming Gao <liming.gao@intel.com>

git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@13778 6f19259b-4bc3-4df7-8a09-765794883524

MdeModulePkg/Universal/Network/Tcp4Dxe/Tcp4Input.c

@@ -478,7 +478,6 @@ TcpDeliverData (
         //
         NetbufFree (Nbuf);
         return -1;
-        break;
       default:
         break;
       }