Try to fix OOB tests more on Windows after r367642

See PR42868 for more details.

The affected list of tests is:

Failing Tests (8):
    AddressSanitizer-Unit :: ./Asan-x86_64-calls-Test.exe/AddressSanitizer.LargeOOBRightTest
    AddressSanitizer-Unit :: ./Asan-x86_64-calls-Test.exe/AddressSanitizer.OOBRightTest
    AddressSanitizer-Unit :: ./Asan-x86_64-calls-Test.exe/AddressSanitizer.OOB_char
    AddressSanitizer-Unit :: ./Asan-x86_64-calls-Test.exe/AddressSanitizer.OOB_int
    AddressSanitizer-Unit :: ./Asan-x86_64-inline-Test.exe/AddressSanitizer.LargeOOBRightTest
    AddressSanitizer-Unit :: ./Asan-x86_64-inline-Test.exe/AddressSanitizer.OOBRightTest
    AddressSanitizer-Unit :: ./Asan-x86_64-inline-Test.exe/AddressSanitizer.OOB_char
    AddressSanitizer-Unit :: ./Asan-x86_64-inline-Test.exe/AddressSanitizer.OOB_int

llvm-svn: 367874