Check title is string (#300)

* Check title is string

* Fix lint and brackets

Community/Tdarr_Plugin_rr01_drpeppershaker_extract_subs_to_SRT.js

@@ -98,7 +98,9 @@ const plugin = (file, librarySettings, inputs, otherArguments) => {
     const { index } = subStream;
     if (fs.existsSync(`${subsFile}`)) {
       response.infoLog += `${lang}.srt already exists. Skipping!\n`;
-    } else if (title.toLowerCase().includes('commentary') || title.toLowerCase().includes('description')) {
+    } else if (typeof title === 'string'
+    && (title.toLowerCase().includes('commentary')
+    || title.toLowerCase().includes('description'))) {
       response.infoLog += `Stream ${i} ${lang}.srt is a ${title} track. Skipping!\n`;
     } else {
       response.infoLog += `Extracting ${lang}.srt\n`;