ret was not being set to 1 on dig error. [RT #46990]

(cherry picked from commit 69c4c987)

bin/tests/system/rndc/tests.sh

@@ -450,13 +450,13 @@ ret=0
 $RNDC -s 10.53.0.4 -p 9956 -c ns4/key6.conf querylog on >/dev/null 2>&1 || ret=1
 grep "query logging is now on" ns4/named.run > /dev/null || ret=1
 # query for builtin and check if query was logged
-$DIG @10.53.0.4 -p 5300 -c ch -t txt foo12345.bind > /dev/null || ret 1
+$DIG @10.53.0.4 -p 5300 -c ch -t txt foo12345.bind > /dev/null || ret=1
 grep "query: foo12345.bind CH TXT" ns4/named.run > /dev/null || ret=1
 # toggle query logging and check again
 $RNDC -s 10.53.0.4 -p 9956 -c ns4/key6.conf querylog > /dev/null 2>&1 || ret=1
 grep "query logging is now off" ns4/named.run > /dev/null || ret=1
 # query for another builtin zone and check if query was logged
-$DIG @10.53.0.4 -p 5300 -c ch -t txt foo9876.bind > /dev/null || ret 1
+$DIG @10.53.0.4 -p 5300 -c ch -t txt foo9876.bind > /dev/null || ret=1
 grep "query: foo9876.bind CH TXT" ns4/named.run > /dev/null && ret=1
 if [ $ret != 0 ]; then echo "I:failed"; fi
 status=`expr $status + $ret`