[3405] Fixed line break in the signal handling test for DHCPv6.

src/bin/dhcp6/tests/dhcp6_reconfigure_test.sh

@@ -121,8 +121,7 @@ if [ ${_GET_RECONFIGS} -ne 1 ]; then
     printf "ERROR: server has been reconfigured despite bogus configuration.\n"
     clean_exit 1
 elif [ ${_GET_RECONFIG_ERRORS} -ne 1 ]; then
-    printf "ERROR: server did not report reconfiguration error despite attempt" \
-        " to configure it with invalid configuration.\n"
+    printf "ERROR: server did not report reconfiguration error despite attempt to configure it with invalid configuration.\n"
     clean_exit 1
 fi