fix PythonDataObjectsTest.TestExceptions on windows

Looks like on windows googlemock regexes treat newlines differently
from on darwin.    This patch fixes the regex in this test so it
will work on both.

Fixes: https://reviews.llvm.org/D69214

git-svn-id: https://llvm.org/svn/llvm-project/lldb/trunk@375477 91177308-0d34-0410-b5e6-96231b3b80d8
1 file changed