[flang] Use "..."_en_US for messages.

Original-commit: flang-compiler/f18@fffa8815762a7fa449863a6fa0f7c4b72bd0d4e4
Reviewed-on: https://github.com/flang-compiler/f18/pull/14
Tree-same-pre-rewrite: false
diff --git a/flang/lib/parser/preprocessor.h b/flang/lib/parser/preprocessor.h
index 8872761..8f5ecf6 100644
--- a/flang/lib/parser/preprocessor.h
+++ b/flang/lib/parser/preprocessor.h
@@ -74,7 +74,8 @@
   CharPointerWithLength SaveTokenAsName(const CharPointerWithLength &);
   bool IsNameDefined(const CharPointerWithLength &);
   TokenSequence ReplaceMacros(const TokenSequence &, const Prescanner &);
-  bool SkipDisabledConditionalCode(const std::string &, IsElseActive, Prescanner *);
+  bool SkipDisabledConditionalCode(
+      const std::string &, IsElseActive, Prescanner *);
   bool IsIfPredicateTrue(
       const TokenSequence &expr, size_t first, size_t exprTokens, Prescanner *);