-Fix display of megamorphic miss function.

runtime/vm/object.cc

Index: runtime/vm/object.cc
diff --git a/runtime/vm/object.cc b/runtime/vm/object.cc
index ac87c8b164178931cb4ea23fd4d7a65d2eb02902..5997f1ecdbbd96fa226bfcc446ee6b80db104a9b 100644
--- a/runtime/vm/object.cc
+++ b/runtime/vm/object.cc
@@ -8904,11 +8904,10 @@ void Script::PrintJSONImpl(JSONStream* stream, bool ref) const {
   const String& encoded_uri = String::Handle(String::EncodeIRI(uri));
   ASSERT(!encoded_uri.IsNull());
   const Library& lib = Library::Handle(FindLibrary());
-  if (lib.IsNull()) {
-    ASSERT(kind() == RawScript::kEvaluateTag);
+  if (kind() == RawScript::kEvaluateTag) {
     jsobj.AddServiceId(*this);
   } else {
-    ASSERT(kind() != RawScript::kEvaluateTag);
+    ASSERT(!lib.IsNull());
     jsobj.AddFixedServiceId("libraries/%" Pd "/scripts/%s",
         lib.index(), encoded_uri.ToCString());
   }