testOptional failing with 3.16.0-rc3

Testing out builds of the cmake Fedora package on Fedora rawhide using 3.16.0-rc3 and getting a new test case failure:

test 267
        Start 267: CMakeLib.testOptional
267: Test command: /builddir/build/BUILD/cmake-3.16.0-rc3/build/Tests/CMakeLib/CMakeLibTests "testOptional"
267: Test timeout computed to be: 1500
257/554 Test #267: CMakeLib.testOptional ............................Child aborted***Exception:   1.28 sec

This is with ctest -V -j4.

Edited Nov 13, 2019 by Kyle Edwards

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