Fix exception parsing generic function type syntax

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 ea41c985f8a75d59658d1c4392f2600a62ac7507..58571133ee7eab58999afd80b9c14dd00fb58ff3 100644
--- a/pkg/analyzer/lib/src/generated/parser.dart
+++ b/pkg/analyzer/lib/src/generated/parser.dart
@@ -5653,9 +5653,9 @@ class Parser {
     Token next = null;
     if (_atGenericFunctionTypeAfterReturnType(startToken)) {
       next = skipGenericFunctionTypeAfterReturnType(startToken);
-    } else if (_currentToken.keyword == Keyword.VOID &&
-        _atGenericFunctionTypeAfterReturnType(_currentToken.next)) {
-      next = next.next;
+    } else if (startToken.keyword == Keyword.VOID &&
+        _atGenericFunctionTypeAfterReturnType(startToken.next)) {
+      next = startToken.next;
     } else {
       next = skipTypeName(startToken);
     }