Fixed the issue that the socket is closed too early (kylefarris#127)

index.js

@@ -2273,9 +2273,6 @@ class NodeClam {
                     .on('end', () => {
                         if (this.settings.debugMode) console.log(`${this.debugLabel}: The input stream has dried up.`);
                         finished = true;
-                        stream.destroy();
-                        socket.destroy();
-                        transform.destroy();
                     })
                     // There was an error with the stream (ex. uploader closed browser)
                     .on('error', (err) => {
@@ -2318,6 +2315,9 @@ class NodeClam {
                         if (this.settings.debugMode) console.log(`${this.debugLabel}: ClamAV is done scanning.`);
                         // Fully close up the socket
                         socket.end();
+                        stream.destroy();
+                        socket.destroy();
+                        transform.destroy();
 
                         // Concat all the response chunks into a single buffer
                         const response = Buffer.concat(chunks);