Remove XMEMSET after XFREE in sniffer.c

src/sniffer.c

@@ -831,7 +831,6 @@ static void FreeSnifferSession(SnifferSession* session)
 #endif
     }
     XFREE(session, NULL, DYNAMIC_TYPE_SNIFFER_SESSION);
-    XMEMSET(session, 0, sizeof(SnifferSession));
 }