Check _localVariableInfo initialized in VariableResolverVisitor.

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

Index: pkg/analyzer/lib/src/generated/resolver.dart
diff --git a/pkg/analyzer/lib/src/generated/resolver.dart b/pkg/analyzer/lib/src/generated/resolver.dart
index fab4ed1df0ca8e18f6b675b1e8d4f6884432492c..4f350a4f142d8f03daf6143f24488f0c717f7908 100644
--- a/pkg/analyzer/lib/src/generated/resolver.dart
+++ b/pkg/analyzer/lib/src/generated/resolver.dart
@@ -12486,6 +12486,12 @@ class VariableResolverVisitor extends ScopedVisitor {
             nameScope: nameScope);
 
   @override
+  Object visitBlockFunctionBody(BlockFunctionBody node) {
+    assert(_localVariableInfo != null);
+    return super.visitBlockFunctionBody(node);
+  }
+
+  @override
   Object visitConstructorDeclaration(ConstructorDeclaration node) {
     ExecutableElement outerFunction = _enclosingFunction;
     LocalVariableInfo outerLocalVariableInfo = _localVariableInfo;
@@ -12504,6 +12510,12 @@ class VariableResolverVisitor extends ScopedVisitor {
   Object visitExportDirective(ExportDirective node) => null;
 
   @override
+  Object visitExpressionFunctionBody(ExpressionFunctionBody node) {
+    assert(_localVariableInfo != null);
+    return super.visitExpressionFunctionBody(node);
+  }
+
+  @override
   Object visitFunctionDeclaration(FunctionDeclaration node) {
     ExecutableElement outerFunction = _enclosingFunction;
     LocalVariableInfo outerLocalVariableInfo = _localVariableInfo;