Fixed an issue where we might cause our test suite to exit if we end up
concatenating a string with "None" in python. Using a python format string
gets us around this by handling it gracefully.



git-svn-id: https://llvm.org/svn/llvm-project/lldb/trunk@145225 91177308-0d34-0410-b5e6-96231b3b80d8
1 file changed