Fix handling of sends with wrong arity

tests/compiler/dart2js/cpa_inference_test.dart

Index: tests/compiler/dart2js/cpa_inference_test.dart
diff --git a/tests/compiler/dart2js/cpa_inference_test.dart b/tests/compiler/dart2js/cpa_inference_test.dart
index a8db3d513305e96e2cd3c225c143ef7157e2eaf3..8e059fecdb4bb5ed8abc7ad1d01c3b1d25802dda 100644
--- a/tests/compiler/dart2js/cpa_inference_test.dart
+++ b/tests/compiler/dart2js/cpa_inference_test.dart
@@ -588,6 +588,25 @@ testFieldInitialization() {
   result.checkFieldHasType('A', 'y', [result.int]);
 }
 
+testSendWithWrongArity() {
+  final String source = r"""
+    f(x) { }
+    class A { g(x) { } }
+    main () {
+      var x = f();
+      var y = f(1, 2);
+      var z = new A().g();
+      var w = new A().g(1, 2);
+      x; y; z; w;
+    }
+    """;
+  AnalysisResult result = analyze(source);
+  result.checkNodeHasType('x', []);
+  result.checkNodeHasType('y', []);
+  result.checkNodeHasType('z', []);
+  result.checkNodeHasType('w', []);
+}
+
 void main() {
   testLiterals();
   testRedefinition();
@@ -614,4 +633,5 @@ void main() {
   testCompoundOperators1();
   testCompoundOperators2();
   // testFieldInitialization(); // TODO(polux)
+  testSendWithWrongArity();
 }