ipv4: prevent potential spectre v1 gadget in ipmetricsconvert()
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 v5.4.231 by commit 746db9ec1e672eee13965625ddac0d97e16fa20c, it was introduced in version v4.3 by commit 6cf9dfd3bd62edfff69f11c0f111bc261166e4c7. For more details please see the references link.