docs: add @MunMunMiao as a contributor

Author: tunnckoCore

src/File.js

@@ -33,6 +33,9 @@ class File extends EventEmitter {
 
   open() {
     this._writeStream = new fs.WriteStream(this.path);
+    this._writeStream.on('error', (err) => {
+      this.emit('error', err);
+    });
   }
 
   toJSON() {

src/Formidable.js

@@ -257,7 +257,9 @@ class IncomingForm extends EventEmitter {
       type: part.mime,
       hash: this.hash,
     });
-
+    file.on('error', (err) => {
+      this._error(err);
+    });
     this.emit('fileBegin', part.name, file);
 
     file.open();
@@ -540,6 +542,10 @@ class IncomingForm extends EventEmitter {
       type: mime,
     });
 
+    file.on('error', (err) => {
+      this._error(err);
+    });
+
     this.emit('fileBegin', filename, file);
     file.open();
     this.openedFiles.push(file);