Handle setter without getter for compounds in SemanticSendVisitor

pkg/compiler/lib/src/resolution/send_resolver.dart

Index: pkg/compiler/lib/src/resolution/send_resolver.dart
diff --git a/pkg/compiler/lib/src/resolution/send_resolver.dart b/pkg/compiler/lib/src/resolution/send_resolver.dart
index 0ddce75d817a96285e0a1ef6669f34e12234c57b..23ef20c96b0a497c2eacd04a2e5609759426768d 100644
--- a/pkg/compiler/lib/src/resolution/send_resolver.dart
+++ b/pkg/compiler/lib/src/resolution/send_resolver.dart
@@ -385,6 +385,8 @@ abstract class SendResolverMixin {
     } else {
       if (Elements.isErroneous(element)) {
         return new StaticAccess.unresolved(element);
+      } else if (isCompound && Elements.isErroneous(getter)) {
+        return new StaticAccess.unresolved(getter);
       } else if (element == null || element.isInstanceMember) {
         if (node.receiver == null || node.receiver.isThis()) {
           return new AccessSemantics.thisProperty();