fix:fix cordump problem when run stereo_new_sample on virtual machine

JIRA:OSDK-2943
TEST:test ok

osdk-core/advanced-sensing/ori-osdk-core/protocol/src/dji_protocol_base.cpp

@@ -77,6 +77,13 @@ ProtocolBase::readPoll()
   {
     this->buf_read_pos = 0;
     this->read_len     = deviceDriver->readall(this->buf, BUFFER_SIZE);
+
+    if (this->read_len < 0)
+    {
+      memset(p_filter->recvBuf, 0, p_filter->recvIndex);
+      p_filter->recvIndex = 0;
+      return false;
+    }
   }
 
 #ifdef API_BUFFER_DATA

osdk-core/advanced-sensing/platform/src/linux_usb_device.cpp

@@ -176,7 +176,7 @@ LinuxUSBDevice::readall(uint8_t* buf, size_t maxlen)
   int read_len = 0, ret;
   ret = libusb_bulk_transfer(DJI_dev_handle, IN_END_PT,
                              buf, maxlen, &read_len, TIMEOUT);
-  if (0 == ret)
+  if (0 == ret || read_len != 0)
     return (size_t)read_len;
 
   return (size_t)-1;