tools/iio/iio_utils:fix memory leak
[ Upstream commit f2edf0c819a4823cd6c288801ce737e8d4fcde06 ] 1. fopen sysfs without fclose. 2. asprintf filename without free. 3. if asprintf return error,do not need to free the buffer. Signed-off-by:Yulong Zhang <yulong.zhang@metoak.net> Link: https://lore.kernel.org/r/20230117025147.69890-1-yulong.zhang@metoak.net Signed-off-by:
Jonathan Cameron <Jonathan.Cameron@huawei.com> Signed-off-by:
Sasha Levin <sashal@kernel.org>
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