diff --git a/js/src/jsscript.c b/js/src/jsscript.c
index 263bc6a26495..f274b7806abf 100644
--- a/js/src/jsscript.c
+++ b/js/src/jsscript.c
@@ -72,13 +72,17 @@ static JSBool
 script_toSource(JSContext *cx, JSObject *obj, uintN argc, jsval *argv,
                 jsval *rval)
 {
+    uint32 indent;
     JSScript *script;
     size_t i, j, k, n;
     char buf[16];
     jschar *s, *t;
-    uint32 indent;
     JSString *str;
 
+    indent = 0;
+    if (argc && !js_ValueToECMAUint32(cx, argv[0], &indent))
+        return JS_FALSE;
+
     if (!JS_InstanceOf(cx, obj, &js_ScriptClass, argv))
         return JS_FALSE;
     script = (JSScript *) JS_GetPrivate(cx, obj);
@@ -91,9 +95,6 @@ script_toSource(JSContext *cx, JSObject *obj, uintN argc, jsval *argv,
         k = 0;
         s = NULL;               /* quell GCC overwarning */
     } else {
-        indent = 0;
-        if (argc && !js_ValueToECMAUint32(cx, argv[0], &indent))
-            return JS_FALSE;
         str = JS_DecompileScript(cx, script, "Script.prototype.toSource",
                                  (uintN)indent);
         if (!str)
@@ -133,10 +134,14 @@ static JSBool
 script_toString(JSContext *cx, JSObject *obj, uintN argc, jsval *argv,
                 jsval *rval)
 {
-    JSScript *script;
     uint32 indent;
+    JSScript *script;
     JSString *str;
 
+    indent = 0;
+    if (argc && !js_ValueToECMAUint32(cx, argv[0], &indent))
+        return JS_FALSE;
+
     if (!JS_InstanceOf(cx, obj, &js_ScriptClass, argv))
         return JS_FALSE;
     script = (JSScript *) JS_GetPrivate(cx, obj);
@@ -145,9 +150,6 @@ script_toString(JSContext *cx, JSObject *obj, uintN argc, jsval *argv,
         return JS_TRUE;
     }
 
-    indent = 0;
-    if (argc && !js_ValueToECMAUint32(cx, argv[0], &indent))
-        return JS_FALSE;
     str = JS_DecompileScript(cx, script, "Script.prototype.toString",
                              (uintN)indent);
     if (!str)