Run clang-format on DynamicLoaderWindowsDYLD.

Summary:
This uses the .clang-format at the root of the LLDB repo and is just a
mechanical change that precedes more work in this file.

Reviewers: clayborg, zturner

Subscribers: lldb-commits

Differential Revision: http://reviews.llvm.org/D12217

llvm-svn: 245634