[flang] This test fails when the directory in which test tests are run contains a...

[flang] This test fails when the directory in which test tests are run contains a path that matches the pattern "do *[1-9]".  In my case, I had a directory called "do1".  The "*" is not necessary in the pattern.  Now the test passes unless the directory contains a " ".

Original-commit: flang-compiler/f18@462f15e4e7c1e6a2c266700e4548f67ba9b32ca9
Reviewed-on: https://github.com/flang-compiler/f18/pull/365