Ignore signed integer overflow in logRound.

There is a potential signed integer overflow in logRound on the return
statement arithmetic which throws an error on integer sanitized builds.

 runtime error: signed integer overflow: 94 * 1000000000 cannot be
 represented in type 'int'

From the comments this looks like this is expected to overflow. For now,
disable sanitization in this function.

Bug: 30969751
Test: Build compiles with and without integer sanitization.
Change-Id: Idfb7eb46ec30f34de75ac3c912760e8fe9525299