Call JS_GC instead of js_GC within JS_MaybeGC. Thanks to

A. Hodgkinson <ahodgkin@acorn.co.uk> for finding this (and to chouck
for checking it in to js/ref/jsapi.c.)

js/src/jsapi.c

@@ -814,7 +814,7 @@ JS_MaybeGC(JSContext *cx)
     bytes = rt->gcBytes;
     lastBytes = rt->gcLastBytes;
     if (bytes > 8192 && bytes > lastBytes + lastBytes / 2)
-	js_GC(cx);
+	JS_GC(cx);
 }
 
 JS_PUBLIC_API(JSGCCallback)