Minor fixes in the objects printer.

src/runtime/runtime-test.cc

Index: src/runtime/runtime-test.cc
diff --git a/src/runtime/runtime-test.cc b/src/runtime/runtime-test.cc
index 2c51879307be128ba982ff7f34683dbb1e2de3dd..d72ea6da6838c5b2c8904519a7360384144737eb 100644
--- a/src/runtime/runtime-test.cc
+++ b/src/runtime/runtime-test.cc
@@ -457,7 +457,6 @@ RUNTIME_FUNCTION(Runtime_DebugPrint) {
   }
   args[0]->Print(os);
   if (args[0]->IsHeapObject()) {
-    os << "\n";
     HeapObject::cast(args[0])->map()->Print(os);
   }
 #else