pushMessage的type为ANSI格式时，推送的大量消息导致内存溢出。

[lsrxx]

Bug description
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Steps to reproduce
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2. Click on '....'
3. Scroll down to '....'
4. See error

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Reproduce environment:

• OS: [e.g. iOS]
• Browser [e.g. chrome, safari]
• Version [e.g. 2.0.4]

Detailed Description
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[tzfun]

已发布 2.3.0 和 3.3.0 更新