ext4: make variable "count" signed
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 v5.10.124 by commit 0ca74dacfd478a9c03361b7512be48ea6b22e8a5, it was introduced in version v5.10.121 by commit da2f05919238c7bdc6e28c79539f55c8355408bb. For more details please see the references link.