stop servers on error in run script

riot/start.sh

@@ -1,6 +1,6 @@
 #!/bin/bash
 PORT=5000
-echo "running riot on http://localhost:$PORT..."
+echo "running riot on http://localhost:$PORT ..."
 BASE_DIR=$(readlink -f $(dirname $0))
 cd $BASE_DIR/
 pushd riot-web/webapp/ > /dev/null

run.sh

@@ -1,7 +1,19 @@
 #!/bin/bash
-set -e
+
+stop_servers() {
+	./riot/stop.sh
+	./synapse/stop.sh
+}
+
+handle_error() {
+	EXIT_CODE=$?
+	stop_servers
+	exit $EXIT_CODE
+}
+
+trap 'handle_error' ERR
+
 ./synapse/start.sh
 ./riot/start.sh
 node start.js
-./riot/stop.sh
-./synapse/stop.sh
+stop_servers