K 10
svn:author
V 8
gallatin
K 8
svn:date
V 27
2019-03-18T12:41:42.579814Z
K 7
svn:log
V 372
Fix a typo introduced in r344133

The line was misedited to change tt to st instead of
changing ut to st.

The use of st as the denominator in mul64_by_fraction() will lead
to an integer divide fault in the intr proc (the process holding
ithreads) where st will be 0.  This divide by 0 happens after
the total runtime for all ithreads exceeds 76 hours.

Submitted by: bde

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