Change the order of arguments of the (One|Two)ByteSeqStringSetChar intrinsic.

test/mjsunit/regress/regress-seqstrsetchar-ex3.js

Index: test/mjsunit/regress/regress-seqstrsetchar-ex3.js
diff --git a/test/mjsunit/regress/regress-seqstrsetchar-ex3.js b/test/mjsunit/regress/regress-seqstrsetchar-ex3.js
index 43d2b083526cbf88da567896c1fd9207b587dd6d..0a6b2116488f4f17cbf0f0feafa17a02613081cb 100644
--- a/test/mjsunit/regress/regress-seqstrsetchar-ex3.js
+++ b/test/mjsunit/regress/regress-seqstrsetchar-ex3.js
@@ -30,8 +30,8 @@
 function test() {
   var string = %NewString(10, true);
   for (var i = 0; i < 10; i++) {
-    %_OneByteSeqStringSetChar(string, i, 65);
-    %_OneByteSeqStringSetChar(string, i, 66);
+    %_OneByteSeqStringSetChar(i, 65, string);
+    %_OneByteSeqStringSetChar(i, 66, string);
   }
   for (var i = 0; i < 10; i++) {
     assertEquals("B", string[i]);