clang-format: Fix bug concerning the alignment of "}".

Before:
    int i;  // indented 2 space more than clang-format would use.
    SomeReturnType  // clang-format invoked on this line.
    SomeFunctionMakingLBraceEndInColumn80() {
  }  // This is the indent clang-format would prefer.

After:
    int i;  // indented 2 space more than clang-format would use.
    SomeReturnType  // clang-format invoked on this line.
    SomeFunctionMakingLBraceEndInColumn80() {
    }

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@186120 91177308-0d34-0410-b5e6-96231b3b80d8