The default timeout for EvaluateExpressionOptions is not 0, so if no timeout is provided, we have to set the option timeout to 0 by hand.

<rdar://problem/15846781>

git-svn-id: https://llvm.org/svn/llvm-project/lldb/trunk@199509 91177308-0d34-0410-b5e6-96231b3b80d8