t/t0501-cramp-rainsocket.sh in rainbows-4.3.1 vs t/t0501-cramp-rainsocket.sh in rainbows-4.4.0

@@ -23,10 +23,10 @@
 	rainbows -E deployment -D $CONFIG_RU -c $unicorn_config
 	rainbows_wait_start
 }
 
 t_begin "wait for server to say hello to us" && {
-	ok=$((curl --no-buffer -sS http://$listen/ || :) | \
+	ok=$( (curl --no-buffer -sS http://$listen/ || :) | \
 	     (tr -d '\0\0377' || :) | \
 	     awk '/Hello from the Server/ { print "ok"; exit 0 }')
 
 	test x"$ok" = xok
 }