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SNEHAL
536bad201e
Make buffer pointer NULL, once it is freed. In hid_close() buffer pointer is freed and next to that the libusb_free_transfer function is called which checks for if the LIBUSB_TRANSFER_FREE_BUFFER flag is set and the buffer pointer is not NULL. when this condition evaluates true, it tries to free memory for a buffer which is already free and a crash occurs. Even though the described behavior should not happen as per libusb documentation, it has been observed with some version(s) of libusb.