modify fixmysql code

app.js

@@ -60,17 +60,19 @@ app.get('/servcmd', (req, res) => {
 });
 
 app.get('/fixmysql', (req, res) => {
+    exec('systemctl stop mysqld', (err, sout, serr) => {
         let cmd = 'rm /home/www/mydb/aria*';
         let json = {
             rm: '',
             restart: ''
         };
         exec(cmd, (err, stdout, stderr) => {
-        let cmd = 'systemctl restart mysql';
+            let cmd = 'systemctl restart mysqld';
             json.rm = stdout;
             exec(cmd, (err, sout, serr) => {
                 json.restart = sout;
                 res.send(json);
             })
         })
+    })
 });