Malloc cl in the cmdline_stdin_new function, so release in the
cmdline_stdin_exit function is logical, so that cl will not be
released alone.
Fixes: af75078fece3 ("first public release")
Signed-off-by: Zhihong Peng <zhihongx.peng@intel.com>
Reviewed-by: Dmitry Kozlyuk <dmitry.kozliuk@gmail.com>
Acked-by: Olivier Matz <olivier.matz@6wind.com>
Tested-by: Zhihong Peng <zhihongx.peng@intel.com>