don't crash if the PTY suddenly produces strings (#2004, fixes #1955)

terminus-terminal/src/bufferizedPTY.js

@@ -38,6 +38,9 @@ module.exports = function patchPTYModule (mod) {
     }
 
     terminal.on('data', data => {
+        if (typeof data === 'string') {
+            data = Buffer.from(data)
+        }
         buffer = Buffer.concat([buffer, data])
         if (Date.now() - lastFlush > maxWindow) {
             // Taking too much time buffering, flush to keep things interactive