Fix: systemd mistake in configure

configure

@@ -873,10 +873,10 @@ if [ -z "${TURN_NO_SYSTEMD}" ] ; then
         ${ECHO_CMD} "Systemd library found."
     else
         ${ECHO_CMD} "Systemd library not found. Building without systemd support."
-        TURN_NO_PQ="-DTURN_NO_SYSTEMD"
+        TURN_NO_SYSTEMD="-DTURN_NO_SYSTEMD"
     fi
 else
-    TURN_NO_PQ="-DTURN_NO_SYSTEMD"
+    TURN_NO_SYSTEMD="-DTURN_NO_SYSTEMD"
 fi
 
 ###########################
@@ -1026,7 +1026,7 @@ ${ECHO_CMD} "LDFLAGS += ${OSLIBS}" >> Makefile
 ${ECHO_CMD} "DBLIBS += ${DBLIBS}" >> Makefile
 ${ECHO_CMD} "CFLAGS += ${OSCFLAGS}" >> Makefile
 ${ECHO_CMD} "CPPFLAGS = ${CPPFLAGS}" >> Makefile
-${ECHO_CMD} "DBCFLAGS += ${DBCFLAGS} ${TURN_NO_PQ} ${TURN_NO_MYSQL} ${TURN_NO_SQLITE} ${TURN_NO_MONGO} ${TURN_NO_HIREDIS}" >> Makefile
+${ECHO_CMD} "DBCFLAGS += ${DBCFLAGS} ${TURN_NO_PQ} ${TURN_NO_MYSQL} ${TURN_NO_SQLITE} ${TURN_NO_MONGO} ${TURN_NO_HIREDIS} ${TURN_NO_SYSTEMD}" >> Makefile
 ${ECHO_CMD} "#" >> Makefile
 ${ECHO_CMD} "PORTNAME = ${PORTNAME}" >> Makefile
 ${ECHO_CMD} "PREFIX = ${PREFIX}" >> Makefile