Fix mptcp BPF scheduler

mptcp/files/etc/init.d/mptcp

@@ -72,7 +72,7 @@ global_multipath_settings() {
 			for scheduler in $(ls -1 /usr/share/bpf/scheduler/*.o); do
 				bpftool struct_ops register $scheduler >/dev/null 2>&1
 			done
-			sysctl -qew net.mptcp.scheduler="$(echo $mptcp_scheduler | sed 's/mptcp_//' 's/.o//')" >/dev/null 2>&1
+			sysctl -qew net.mptcp.scheduler="$(echo $mptcp_scheduler | sed -e 's/mptcp_//' -e 's/.o//')" >/dev/null 2>&1
 		fi
 	fi
 	[ -z "$congestion" ] || sysctl -qew net.ipv4.tcp_congestion_control="$congestion"