clang-format: [Java] Space before array initializers.

Before:
  new int[]{1, 2, 3, 4};

After:
  new int[] {1, 2, 3, 4};

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@222640 91177308-0d34-0410-b5e6-96231b3b80d8