fix judge jpg and. read degress, oom crash. #332
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原有的框架在修复图片朝向的时候,会一次性加载到内存所有的字节。容易内存溢出。实现发现png也有这种情况。 所以取消了判断格式,然后用读取文件属性的方式获取旋转的角度。再进行处理