[AST] Fix some Clang-tidy modernize and Include What You Use warnings; other minor fixes (NFC).

llvm-svn: 319384

clang/lib/AST/OpenMPClause.cpp

@@ -1,4 +1,4 @@
-//===--- OpenMPClause.cpp - Classes for OpenMP clauses --------------------===//
+//===- OpenMPClause.cpp - Classes for OpenMP clauses ----------------------===//
 //
 //                     The LLVM Compiler Infrastructure
 //
@@ -12,8 +12,14 @@
 //===----------------------------------------------------------------------===//
 
 #include "clang/AST/OpenMPClause.h"
-
 #include "clang/AST/ASTContext.h"
+#include "clang/AST/Decl.h"
+#include "clang/Basic/LLVM.h"
+#include "llvm/ADT/SmallPtrSet.h"
+#include "llvm/Support/Casting.h"
+#include "llvm/Support/ErrorHandling.h"
+#include <algorithm>
+#include <cassert>
 
 using namespace clang;
 
@@ -716,7 +722,6 @@ OMPMapClause::Create(const ASTContext &C, SourceLocation StartLoc,
                      MappableExprComponentListsRef ComponentLists,
                      OpenMPMapClauseKind TypeModifier, OpenMPMapClauseKind Type,
                      bool TypeIsImplicit, SourceLocation TypeLoc) {
-
   unsigned NumVars = Vars.size();
   unsigned NumUniqueDeclarations =
       getUniqueDeclarationsTotalNumber(Declarations);