[OMPT] Fix inconsistent testcases

The main change of this patch is to insert {{.*}} in current_address=[[RETURN_ADDRESS_END]].
This is needed to match any of the alternatively printed addresses.

Additionally, clang-format is applied to the two tests.

Differential Revision: https://reviews.llvm.org/D43115

git-svn-id: https://llvm.org/svn/llvm-project/openmp/trunk@326312 91177308-0d34-0410-b5e6-96231b3b80d8