Implement type variables on local function declarations and expressions.

pkg/analyzer/lib/src/fasta/ast_builder.dart

Index: pkg/analyzer/lib/src/fasta/ast_builder.dart
diff --git a/pkg/analyzer/lib/src/fasta/ast_builder.dart b/pkg/analyzer/lib/src/fasta/ast_builder.dart
index 141099f779b232ab950d21910a94ae23ca0a5939..b617b76930a0db11b87df2b720ca97b26016ba23 100644
--- a/pkg/analyzer/lib/src/fasta/ast_builder.dart
+++ b/pkg/analyzer/lib/src/fasta/ast_builder.dart
@@ -1530,8 +1530,10 @@ class AstBuilder extends ScopeListener {
   void endLocalFunctionDeclaration(Token token) {
     debugEvent("LocalFunctionDeclaration");
     FunctionBody body = pop();
-    pop(); // constructor initializers
-    pop(); // separator before constructor initializers
+    if (isFullAst) {
+      pop(); // constructor initializers
+      pop(); // separator before constructor initializers
+    }
     FormalParameterList parameters = pop();
     SimpleIdentifier name = pop();
     TypeAnnotation returnType = pop();