Fix extra test option

tests/scripts/test017-syncreplication-refresh

@@ -13,7 +13,7 @@
 ## top-level directory of the distribution or, alternatively, at
 ## <http://www.OpenLDAP.org/license.html>.
 
-if test "$BACKEND" != "bdb" -a "$BACKEND" != "hdb" -o ; then
+if test "$BACKEND" != "bdb" -a "$BACKEND" != "hdb" ; then
 	echo "Test does not support $BACKEND"
 	exit 0
 fi

tests/scripts/test018-syncreplication-persist

@@ -13,7 +13,7 @@
 ## top-level directory of the distribution or, alternatively, at
 ## <http://www.OpenLDAP.org/license.html>.
 
-if test "$BACKEND" != "bdb" -a "$BACKEND" != "hdb" -o ; then
+if test "$BACKEND" != "bdb" -a "$BACKEND" != "hdb" ; then
 	echo "Test does not support $BACKEND"
 	exit 0
 fi

tests/scripts/test019-syncreplication-cascade

@@ -13,7 +13,7 @@
 ## top-level directory of the distribution or, alternatively, at
 ## <http://www.OpenLDAP.org/license.html>.
 
-if test "$BACKEND" != "bdb" -a "$BACKEND" != "hdb" -o ; then
+if test "$BACKEND" != "bdb" -a "$BACKEND" != "hdb" ; then
 	echo "Test does not support $BACKEND"
 	exit 0
 fi