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 v4.19.272 by commit ef050cf5fb70d995a0d03244e25179b7c66a924a, it was introduced in version v4.3 by commit 6cf9dfd3bd62edfff69f11c0f111bc261166e4c7. For more details please see the references link.