diff -up mozjs17.0.0/js/src/jsval.h.jsval mozjs17.0.0/js/src/jsval.h
--- mozjs17.0.0/js/src/jsval.h.jsval	2013-05-17 16:31:03.000000000 +0200
+++ mozjs17.0.0/js/src/jsval.h	2013-05-17 16:31:13.000000000 +0200
@@ -304,7 +304,6 @@ typedef union jsval_layout
             int32_t        i32;
             uint32_t       u32;
             JSWhyMagic     why;
-            jsuword        word;
         } payload;
     } s;
     double asDouble;