Fix trap instruction in trace-test, bump XDR version (r=dvander)

js/src/jsxdrapi.h

@@ -205,7 +205,7 @@ JS_XDRFindClassById(JSXDRState *xdr, uint32 id);
  * before deserialization of bytecode.  If the saved version does not match
  * the current version, abort deserialization and invalidate the file.
  */
-#define JSXDR_BYTECODE_VERSION      (0xb973c0de - 72)
+#define JSXDR_BYTECODE_VERSION      (0xb973c0de - 73)
 
 /*
  * Library-private functions.

js/src/trace-test/tests/jaeger/bug563000/trap-own-callsite.js

@@ -3,7 +3,7 @@ x = "notset";
 function myparent(nested) {
   if (nested) {
     /* myparent call in myparent. */
-    trap(myparent, 38, "failure()");
+    trap(myparent, 39, "failure()");
   } else {
     x = "success";   
     myparent(true);