Make Dart Intl message extraction force --warnings-are-errors
-------------
Created by MOE: https://github.com/google/moe
MOE_MIGRATED_REVID=109365650
diff --git a/lib/src/intl_message.dart b/lib/src/intl_message.dart
index 83e1a96..3d25967 100644
--- a/lib/src/intl_message.dart
+++ b/lib/src/intl_message.dart
@@ -118,7 +118,7 @@
         : "${classDeclaration.name.token.toString()}_$outerName";
     var classMatch = classPlusMethod != null && (givenName == classPlusMethod);
     if (!(hasOuterName && (simpleMatch || classMatch))) {
-      return "The 'name' argument for Intl.message must match either"
+      return "The 'name' argument for Intl.message must match either "
           "the name of the containing function or <className>_<methodName> ("
           "'$givenName' vs. '$outerName')";
     }