Fix compilation issue on windows

Fix compilation issue on windows

<http://factory.couchbase.com/job/win_cs_build/ws/couchbase\ep-engine\test
s\ep_testsuite.cc(4958)> : error C2782: 'void checkeqfn(T,T,const char
        ,const char ,const int)' : template parameter 'T' is ambiguous

<http://factory.couchbase.com/job/win_cs_build/ws/couchbase\ep-engine\test
s\ep_testsuite.cc(74)> : see declaration of 'checkeqfn'
could be 'unsigned __int64'
or       'unsigned long'
NMAKE : fatal error U1077:
'C:\PROGRA~2\MICROS~2.0\VC\bin\amd64\cl.exe' :
return code '0x2'

Change-Id: I9a0bf5bd74276ebe9ac6a709302704a2bab06c25
Reviewed-on: http://review.couchbase.org/57454
Reviewed-by: Chiyoung Seo <chiyoung@couchbase.com>
Tested-by: abhinav dangeti <abhinav@couchbase.com>