libsubcmd: Fix use-after-free for realloc(..., 0)
This is an automated ID intended to aid in discovery of potential security vulnerabilities. The actual impact and attack plausibility have not yet been proven. This ID is fixed in Linux Kernel version v4.19.231 by commit 1029268dc50d3eb54ab0e8d7075d33b190cad9d2, it was introduced in version v4.5 by commit 2f4ce5ec1d447beb42143a9653716a2ab025161e. For more details please see the references link.