Change in coreboot[master]: northbridge/intel/haswell: Fix undefined behavior.

[build bot (Jenkins) (Code Review)]

build bot (Jenkins) has posted comments on this change. ( https://review.coreboot.org/20444 )

Change subject: northbridge/intel/haswell: Fix undefined behavior.
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Patch Set 1: Verified-1

Build Failed

https://qa.coreboot.org/job/coreboot-gerrit/71056/ : FAILURE

https://qa.coreboot.org/job/coreboot-checkpatch/25232/ : SUCCESS