Comment.h: correct identation


git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@159793 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/include/clang/AST/Comment.h b/include/clang/AST/Comment.h
index 3df8fb1..e631f38 100644
--- a/include/clang/AST/Comment.h
+++ b/include/clang/AST/Comment.h
@@ -185,7 +185,7 @@
 /// A command with word-like arguments that is considered inline content.
 class InlineCommandComment : public InlineContentComment {
 public:
-    struct Argument {
+  struct Argument {
     SourceRange Range;
     StringRef Text;