Change in coreboot[master]: cpu/x86/name: Fix undefined behavior

[build bot (Jenkins) (Code Review)]

build bot (Jenkins) has posted comments on this change. ( https://review.coreboot.org/20452 )

Change subject: cpu/x86/name: Fix undefined behavior
......................................................................

Patch Set 2: Verified+1

Build Successful

https://qa.coreboot.org/job/coreboot-gerrit/56541/ : SUCCESS

https://qa.coreboot.org/job/coreboot-checkpatch/12120/ : SUCCESS