Fix the parsing of generic function expressions

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 d9e8d6e841f1b31a9f959bb4a71b9d2db07fa5e2..4430e76a7148572e28e47b0742553acf384c1bdf 100644
--- a/pkg/analyzer/lib/src/generated/parser.dart
+++ b/pkg/analyzer/lib/src/generated/parser.dart
@@ -4269,6 +4269,9 @@ class Parser {
         _inInitializer = wasInInitializer;
       }
     } else if (type == TokenType.LT || _injectGenericCommentTypeList()) {
+      if (isFunctionExpression(currentToken)) {
+        return parseFunctionExpression();
+      }
       return parseListOrMapLiteral(null);
     } else if (type == TokenType.OPEN_CURLY_BRACKET) {
       return parseMapLiteral(null, null);