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printf_info_one_json() won't initialize the passed jso_r parameter on
error, and hence the usage in printf_info() needs prior initialization,
otherwise an uninitialized pointer is passed to json_object_put() on
failure.
Reported by the internal XenServer Coverity instance.
Fixes: f6c6f2679d ("libxl: Convert libxl__object_to_json() to json-c")
Signed-off-by: Roger Pau Monné <roger.pau@citrix.com>
Reviewed-by: Andrew Cooper <andrew.cooper3@citrix.com>
Reviewed-by: Jason Andryuk <jason.andryuk@amd.com>
Release-Acked-by: Oleksii Kurochko <oleksii.kurochko@gmail.com>