Fix another parser issue with generic function types

pkg/analyzer/lib/src/generated/parser.dart

Index: pkg/analyzer/lib/src/generated/parser.dart
diff --git a/pkg/analyzer/lib/src/generated/parser.dart b/pkg/analyzer/lib/src/generated/parser.dart
index 64aa175f734e3855fd87a69cb5cf48acd896c4c0..839cf77b2fd6cb27c71a4166c7b41acbc7914bb2 100644
--- a/pkg/analyzer/lib/src/generated/parser.dart
+++ b/pkg/analyzer/lib/src/generated/parser.dart
@@ -2094,8 +2094,8 @@ class Parser {
         return astFactory.topLevelVariableDeclaration(
             commentAndMetadata.comment,
             commentAndMetadata.metadata,
-            parseVariableDeclarationListAfterType(
-                null, _validateModifiersForTopLevelVariable(modifiers), null),
+            parseVariableDeclarationListAfterType(null,
+                _validateModifiersForTopLevelVariable(modifiers), returnType),
             _expect(TokenType.SEMICOLON));
       } else {
         //