Fix spurious debug-script assertion after enabling Symbols

test/mjsunit/debug-script.js

Index: test/mjsunit/debug-script.js
diff --git a/test/mjsunit/debug-script.js b/test/mjsunit/debug-script.js
index 449d2c9b8f75359890568c31bb212691d25cdcff..35bc560c232fba8a8fd26670edec3a9cc56eb093 100644
--- a/test/mjsunit/debug-script.js
+++ b/test/mjsunit/debug-script.js
@@ -59,7 +59,7 @@ for (i = 0; i < scripts.length; i++) {
 }
 
 // This has to be updated if the number of native scripts change.
-assertEquals(21, named_native_count);
+assertTrue(named_native_count == 20 || named_native_count == 21);
 // Only the 'gc' extension is loaded.
 assertEquals(1, extension_count);
 // This script and mjsunit.js has been loaded.  If using d8, d8 loads