Cleanup: clang-format the MD5 source file.

This is a followup to Nico's request in
https://codereview.chromium.org/1051703002/#msg9

BUG=None
TEST=base_unittests --gtest_filter=MD5*
[email protected]

Review URL: https://codereview.chromium.org/1053753002

Cr-Commit-Position: refs/heads/master@{#323313}
1 file changed