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added check of CB before calling the method apply #11

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added check of CB before calling the method apply #11

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7 changes: 4 additions & 3 deletions lib/telegrambot.js
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Original file line number Diff line number Diff line change
Expand Up @@ -46,9 +46,10 @@ TelegramBot.unwrap = function(cb) {
// by passing the error object as the first parameter.
if (!err && body && body.ok === false) err = TelegramBot.error(body.description, body.error_code, res.statusCode);
if (!err && res.statusCode != 200) err = TelegramBot.error('HTTP status ' + res.statusCode + ' returned.', res.statusCode, res.statusCode);
if (err) return cb.apply(self, [err]);

cb.apply(self, [null, body.result]);
if(cb!=null && cb!=undefined){
if (err) return cb.apply(self, [err]);
cb.apply(self, [null, body.result]);
}
}
}

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