Fix/mdevices info leak - #1801
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On the mopen() failure path, mdevices_info() freed dev_info_new but returned without releasing dev_info_all (allocated by mdevices_info_ul), leaking the device array and its nested allocations. Release it via mdevices_info_destroy() before returning NULL. Saves the original length into dev_count first since *len is zeroed for the caller. Coverity: RESOURCE_LEAK / leaked_storage.
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Summary
mdevices_info()whenmopen()fails while filtering devices without VSEC support.dev_info_allviamdevices_info_destroy()before returningNULL.leaked_storageondev_info_all).