fix appveyor I think

test/setup_db.sh

@@ -13,17 +13,23 @@ PGPORT="${PGPORT:-5432}"
 export PGPORT
 PGHOST="${PGHOST:-localhost}"
 
-# try to handle circleci/docker oddness
-let rc=1
-while [[ $rc -eq 1 ]]; do
-	nc -z ${PGHOST} ${PGPORT}
-	let rc=$?
-done
-if [[ $rc -ne 0 ]]; then
-	echo "Fatal: Could not connect to $PGHOST"
-	exit 1
-fi
+function connect_circle() {
+	# try to handle circleci/docker oddness
+	let rc=1
+	while [[ $rc -eq 1 ]]; do
+		nc -z ${PGHOST} ${PGPORT}
+		let rc=$?
+	done
+	if [[ $rc -ne 0 ]]; then
+		echo "Fatal: Could not connect to $PGHOST"
+		exit 1
+	fi
+}
 
+# appveyor doesn't have 'nc', but it also doesn't have these issues
+if [[ -n $CIRCLECI ]]; then
+	connect_circle
+fi
 
 createdb dbt
 psql -c "CREATE ROLE root WITH PASSWORD 'password';"