Apply modernize-use-default to clang.

Summary: Replace empty bodies of default constructors and destructors with '= default'.

Reviewers: bkramer, klimek

Subscribers: klimek, alexfh, cfe-commits

Differential Revision: http://reviews.llvm.org/D13890

llvm-svn: 250822
diff --git a/clang/lib/Frontend/TextDiagnostic.cpp b/clang/lib/Frontend/TextDiagnostic.cpp
index d4e156d..938fe58 100644
--- a/clang/lib/Frontend/TextDiagnostic.cpp
+++ b/clang/lib/Frontend/TextDiagnostic.cpp
@@ -669,7 +669,7 @@
                                DiagnosticOptions *DiagOpts)
   : DiagnosticRenderer(LangOpts, DiagOpts), OS(OS) {}
 
-TextDiagnostic::~TextDiagnostic() {}
+TextDiagnostic::~TextDiagnostic() = default;
 
 void
 TextDiagnostic::emitDiagnosticMessage(SourceLocation Loc,