chore: try workaround travis windows hanging issue

.travis.yml

@@ -34,6 +34,7 @@ before_install:
 
 cache:
   directories:
+    - "$HOME/AppData/Local/Temp/chocolatey"
     - "$TRAVIS_BUILD_DIR/stunnel-5.54"
 
 before_script:
@@ -42,12 +43,5 @@ before_script:
   - if [ "${TRAVIS_OS_NAME}" == "linux" ]; then
     sudo sh -c 'echo 0 > /proc/sys/net/ipv6/conf/all/disable_ipv6';
     fi
-after_script:
-  - |-
-    case $TRAVIS_OS_NAME in
-      windows)
-        redis-server --service-stop
-    ;;
-    esac
 
 after_success: npm run coveralls

test/node_redis.spec.js

@@ -11,6 +11,14 @@ var fork = require('child_process').fork;
 var redis = config.redis;
 var client;
 
+after(function (done) {
+    if (process.platform !== 'win32' || !process.env.CI) {
+        return done();
+    }
+    require('cross-spawn').sync('redis-server', ['--service-stop'], {});
+    done();
+});
+
 describe('The node_redis client', function () {
 
     describe("The 'add_command' method", function () {