Fix typo that caused orphaned info to be emitted.

dart/sdk/lib/_internal/compiler/implementation/source_file_provider.dart

Index: dart/sdk/lib/_internal/compiler/implementation/source_file_provider.dart
diff --git a/dart/sdk/lib/_internal/compiler/implementation/source_file_provider.dart b/dart/sdk/lib/_internal/compiler/implementation/source_file_provider.dart
index b99053279c4c4bb8c9117551c13ad7442362f9bb..4cbd6411e0a5e93fc2371d53c0c49a4b6c90a039 100644
--- a/dart/sdk/lib/_internal/compiler/implementation/source_file_provider.dart
+++ b/dart/sdk/lib/_internal/compiler/implementation/source_file_provider.dart
@@ -94,7 +94,7 @@ class FormattingDiagnosticHandler {
     // This is used to suppress info about a warning when warnings are
     // suppressed, and similar for hints.
     var previousKind = lastKind;
-    if (previousKind != api.Diagnostic.INFO) {
+    if (kind != api.Diagnostic.INFO) {
       lastKind = kind;
     }
     var color;