
Fix a microbenchmark crash on mingw32; seemingly %lld is not universally
supported on Windows, and %I64d is recommended instead.

R=csilvers
DELTA=6  (5 added, 0 deleted, 1 changed)


Revision created by MOE tool push_codebase.
MOE_MIGRATION=1034


git-svn-id: 29021146237193d7b18c96610dd9df40103866e6@18 03e5f5b5-db94-4691-08a0-1a8bf15f6143

barrbrain/snappy-cxx,couchbase/snappy,apage43/snappy,b3sigma/snappy,chronostore/snappy,b3sigma/snappy,couchbase/snappy,barrbrain/snappy-cxx,b3sigma/snappy,datacratic/snappy,datacratic/snappy,ukoethe/snappy,barrbrain/snappy-cxx,ukoethe/snappy,ukoethe/snappy,couchbase/snappy,b3sigma/snappy,apage43/snappy,ukoethe/snappy,b3sigma/snappy,apage43/snappy,barrbrain/snappy-cxx,apage43/snappy,couchbase/snappy,chronostore/snappy,datacratic/snappy,chronostore/snappy