Fix an exception caused by malformed code

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 72d094a59a27d4782fa9c2fd2d2cc83ef69c0df5..986637df213cc38e82c087e1342251828a6a5b0c 100644
--- a/pkg/analyzer/lib/src/generated/resolver.dart
+++ b/pkg/analyzer/lib/src/generated/resolver.dart
@@ -7677,7 +7677,7 @@ class PartialResolverVisitor extends ResolverVisitor {
    */
   void _addPropagableVariables(List<VariableDeclaration> variables) {
     for (VariableDeclaration variable in variables) {
-      if (variable.initializer != null) {
+      if (variable.name.name.isNotEmpty && variable.initializer != null) {
         VariableElement element = variable.element;
         if (element.isConst || element.isFinal) {
           propagableVariables.add(element);
@@ -7695,7 +7695,7 @@ class PartialResolverVisitor extends ResolverVisitor {
    */
   void _addStaticVariables(List<VariableDeclaration> variables) {
     for (VariableDeclaration variable in variables) {
-      if (variable.initializer != null) {
+      if (variable.name.name.isNotEmpty && variable.initializer != null) {
         staticVariables.add(variable.element);
       }
     }