Michael Haggerty 43a2dfde76 refs: use size_t indexes when iterating over ref transaction updates
Eliminate any chance of integer overflow on platforms where the two
types have different sizes.

Signed-off-by: Michael Haggerty <mhagger@alum.mit.edu>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2017-05-23 14:29:53 +09:00
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