Fix test to run in both snapshot and non-snapshot case

test/mjsunit/debug-script.js

Index: test/mjsunit/debug-script.js
===================================================================
--- test/mjsunit/debug-script.js	(revision 1443)
+++ test/mjsunit/debug-script.js	(working copy)
@@ -33,28 +33,26 @@
 RegExp();
 
 // Count script types.
-var native_count = 0;
+var named_native_count = 0;
 var extension_count = 0;
 var normal_count = 0;
 var scripts = Debug.scripts();
 for (i = 0; i < scripts.length; i++) {
   if (scripts[i].type == Debug.ScriptType.Native) {
-    native_count++;
+    if (scripts[i].name) {
+      named_native_count++;
+    }
   } else if (scripts[i].type == Debug.ScriptType.Extension) {
     extension_count++;
   } else if (scripts[i].type == Debug.ScriptType.Normal) {
-    if (!scripts[i].name) print("X" + scripts[i].source + "X"); // empty script
-    else {
-      print(scripts[i].name);
-      normal_count++;
-      }
+    normal_count++;
   } else {
     assertUnreachable('Unexpected type ' + scripts[i].type);
   }
 }
 
 // This has to be updated if the number of native scripts change.
-assertEquals(16, native_count);
+assertEquals(12, named_native_count);
 // If no snapshot is used, only the 'gc' extension is loaded.
 // If snapshot is used, all extensions are cached in the snapshot.
 assertTrue(extension_count == 1 || extension_count == 5);