解决了API模式下单个文件扫描无法获取文件内容的问题

[BlBana]

No description provided.

[coveralls]

Pull Request Test Coverage Report for Build 408

• 8 of 11 (72.73%) changed or added relevant lines in 3 files are covered.
• 9 unchanged lines in 6 files lost coverage.
• Overall coverage increased (+0.07%) to 42.36%

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Changes Missing Coverage	Covered Lines	Changed/Added Lines	%
cobra/engine.py	5	8	62.5%

Files with Coverage Reduction	New Missed Lines	%
cobra/utils.py	1	35.51%
cobra/log.py	1	44.2%
cobra/init.py	1	30.0%
cobra/api.py	2	12.92%
cobra/config.py	2	61.04%
cobra/cve.py	2	80.94%

Totals
Change from base Build 407:	0.07%
Covered Lines:	1558
Relevant Lines:	3678

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💛 - Coveralls