Silence a compiler warning (in MSVC) about implicitly narrowing jsval to JSBool in JSVAL_IS_INT. Noticed by MikeM. No bug#, rs=Waldo via IRC.

--HG--
extra : rebase_source : 8060def41cdbed1c7b80b01da58b00e1967fb3fe

js/src/jsapi.h

@@ -112,7 +112,7 @@ JSVAL_IS_OBJECT(jsval v)
 static JS_ALWAYS_INLINE JSBool
 JSVAL_IS_INT(jsval v)
 {
-    return v & JSVAL_INT;
+    return (JSBool)(v & JSVAL_INT);
 }
 
 static JS_ALWAYS_INLINE JSBool