Fix crash in issue 8919. The test still fails.

runtime/vm/flow_graph_builder.cc

Index: runtime/vm/flow_graph_builder.cc
===================================================================
--- runtime/vm/flow_graph_builder.cc	(revision 19647)
+++ runtime/vm/flow_graph_builder.cc	(working copy)
@@ -2720,18 +2720,20 @@
     if (super_function->IsNull()) {
       // Could not resolve super operator. Generate call noSuchMethod() of the
       // super class instead.
-      if (result_is_needed) {
-        // Even though noSuchMethod most likely does not return,
-        // we save the stored value if the result is needed.
-        ValueGraphVisitor for_value(owner(), temp_index());
-        node->value()->Visit(&for_value);
-        Append(for_value);
-        Bind(BuildStoreExprTemp(for_value.value()));
-      }
+      // Even though noSuchMethod most likely does not return,
+      // we save the stored value if in case the result is needed.
+      ValueGraphVisitor for_value(owner(), temp_index());
+      node->value()->Visit(&for_value);
+      Append(for_value);
+      Do(BuildStoreExprTemp(for_value.value()));
+
+      const LocalVariable* temp =
+          owner()->parsed_function().expression_temp_var();
+      AstNode* value = new LoadLocalNode(node->token_pos(), temp);
       ArgumentListNode* arguments = new ArgumentListNode(node->token_pos());
       arguments->Add(node->array());
       arguments->Add(node->index_expr());
-      arguments->Add(node->value());
+      arguments->Add(value);
       StaticCallInstr* call =
           BuildStaticNoSuchMethodCall(node->super_class(),
                                       node->array(),