style: address some lgtm alerts for code styling

src/_multithread.js

@@ -5,7 +5,7 @@ if (cluster.isMaster) {
     const ipc = electron.ipcMain;
     const signale = require("signale");
     // Also, leave a core available for the renderer process
-    const osCPUs = require("os").cpus().length - 1
+    const osCPUs = require("os").cpus().length - 1;
     // See #904
     const numCPUs = (osCPUs > 7) ? 7 : osCPUs;
 

src/_renderer.js

@@ -816,7 +816,7 @@ window.writeFile = (path) => {
     fs.writeFile(path, document.getElementById("fileEdit").value, "utf-8", () => {
         document.getElementById("fedit-status").innerHTML = "<i>File saved.</i>";
     });
-}
+};
 
 window.writeSettingsFile = () => {
     window.settings = {

src/classes/filesystem.class.js

@@ -347,7 +347,7 @@ class FilesystemDisplay {
                 }
 
                 if (e.type === "file") {
-                    cmd = `window.fsDisp.openFile(${blockIndex})`
+                    cmd = `window.fsDisp.openFile(${blockIndex})`;
                 }
 
                 if (e.type === "system") {
@@ -554,7 +554,7 @@ class FilesystemDisplay {
                 name = block.name;
             }
 
-            let mime = require("mime-types")
+            let mime = require("mime-types");
 
             block.path = block.path.replace(/\\/g, "/");
 
@@ -632,7 +632,7 @@ class FilesystemDisplay {
                    break;
                 }
             }
-        }
+        };
 
         this.openMedia = (name, path, type) => {
             let block, html;

src/classes/mediaPlayer.class.js

 class MediaPlayer {
     constructor(opts) {
         const modalElementId = "modal_" + opts.modalId;
-        const path = opts.path;
         const type = opts.type;
         const icons = require("./assets/icons/file-icons.json");
         const iconcolor = `rgb(${window.theme.r}, ${window.theme.g}, ${window.theme.b})`;

src/classes/netstat.class.js

@@ -54,7 +54,7 @@ class Netstat {
                 this.geoLookup = lookup;
                 this.lastconn.finished = true;
             });
-        })
+        });
     }
     updateInfo() {
         window.si.networkInterfaces().then(async data => {