clang-format: Fix corner case in OpenMP pragma formatting.

Before:
  #pragma omp reduction( | : var)
After:
  #pragma omp reduction(| : var)

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@187892 91177308-0d34-0410-b5e6-96231b3b80d8
2 files changed