Bug 1004295 - Hard abort if we try to unload modules when loader global reuse is enabled. r=mccr8

js/xpconnect/loader/mozJSComponentLoader.cpp

@@ -1372,6 +1372,9 @@ mozJSComponentLoader::Unload(const nsACString & aLocation)
         return NS_OK;
     }
 
+    MOZ_RELEASE_ASSERT(!mReuseLoaderGlobal, "Module unloading not supported when "
+                                            "compartment sharing is enabled");
+
     nsCOMPtr<nsIIOService> ioService = do_GetIOService(&rv);
     NS_ENSURE_SUCCESS(rv, rv);