[Components][Drivers][USB]fix memory leak
修复一个 bug 该bug曾导致在设备不断电但主机重新枚举设备的情况下会导致内存泄漏并无法接收数据
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@ -486,7 +486,10 @@ static rt_err_t _function_enable(ufunction_t func)
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//
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//
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// _vcom_reset_state(func);
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// _vcom_reset_state(func);
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//
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//
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data->ep_out->buffer = rt_malloc(HID_RX_BUFSIZE);
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if(data->ep_out->buffer == RT_NULL)
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{
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data->ep_out->buffer = rt_malloc(HID_RX_BUFSIZE);
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}
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data->ep_out->request.buffer = data->ep_out->buffer;
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data->ep_out->request.buffer = data->ep_out->buffer;
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data->ep_out->request.size = EP_MAXPACKET(data->ep_out);
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data->ep_out->request.size = EP_MAXPACKET(data->ep_out);
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data->ep_out->request.req_type = UIO_REQUEST_READ_BEST;
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data->ep_out->request.req_type = UIO_REQUEST_READ_BEST;
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