[format] Eliminate global destructors.

llvm-svn: 328047
diff --git a/clang/lib/Format/Format.cpp b/clang/lib/Format/Format.cpp
index 5c7ce85..69b3881 100644
--- a/clang/lib/Format/Format.cpp
+++ b/clang/lib/Format/Format.cpp
@@ -511,7 +511,7 @@
 namespace format {
 
 const std::error_category &getParseCategory() {
-  static ParseErrorCategory C;
+  static const ParseErrorCategory C{};
   return C;
 }
 std::error_code make_error_code(ParseError e) {