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/Driver/ToolChain.cpp b/clang/lib/Driver/ToolChain.cpp
index 65d4f4f..e4611d2 100644
--- a/clang/lib/Driver/ToolChain.cpp
+++ b/clang/lib/Driver/ToolChain.cpp
@@ -72,8 +72,7 @@
           << A->getValue() << A->getAsString(Args);
 }
 
-ToolChain::~ToolChain() {
-}
+ToolChain::~ToolChain() = default;
 
 vfs::FileSystem &ToolChain::getVFS() const { return getDriver().getVFS(); }