Fix scope issue when re-using mime parser instance

lib/imap.js

@@ -255,13 +255,13 @@ ImapConnection.prototype.connect = function(loginCb) {
           self._state.parser = new MIMEParser();
           self._state.parser.on('header', function(name, val) {
             name = name.toLowerCase();
-            if (curReq._msg.headers[name] !== undefined)
-              curReq._msg.headers[name].push(val);
+            if (self._state.requests[0]._msg.headers[name] !== undefined)
+              self._state.requests[0]._msg.headers[name].push(val);
             else
-              curReq._msg.headers[name] = [val];
+              self._state.requests[0]._msg.headers[name] = [val];
           });
           self._state.parser.on('data', function(str) {
-            curReq._msg.emit('data', str);
+            self._state.requests[0]._msg.emit('data', str);
           });
         }
       }

lib/mimeparser.js

@@ -13,12 +13,7 @@ var CR = 13,
     REGEXP_FOLD = /\r\n\s+/g;
 
 var MIMEParser = module.exports = function() {
-  this._state = PARSE_HEADER_NAME;
-  this._hdrname = '';
-  this._hdrval = '';
-  this._sawCR = false;
-  this._sawLF = false;
-  this._needUnfold = false;
+  this.finish();
 };
 inherits(MIMEParser, EventEmitter);