resource: destroy old core_resource

If there is already a core_resource when we are going to make a new
one, remove the old one. This can happen when there is a version
switch.

src/modules/module-protocol-native.c

@@ -320,6 +320,9 @@ static void on_start(void *data, uint32_t version)
 
 	pw_log_debug("version %d", version);
 
+	if (client->core_resource != NULL)
+		pw_resource_remove(client->core_resource);
+
 	if (pw_global_bind(pw_impl_core_get_global(client->core), client,
 			PW_PERM_RWX, version, 0) < 0)
 		return;

src/pipewire/private.h

@@ -952,8 +952,6 @@ int pw_proxy_init(struct pw_proxy *proxy, const char *type, uint32_t version);
 
 void pw_proxy_remove(struct pw_proxy *proxy);
 
-void pw_resource_remove(struct pw_resource *resource);
-
 int pw_context_recalc_graph(struct pw_context *context);
 
 void pw_impl_port_update_info(struct pw_impl_port *port, const struct spa_port_info *info);

src/pipewire/resource.c

@@ -271,6 +271,7 @@ void pw_resource_destroy(struct pw_resource *resource)
 	free(resource);
 }
 
+SPA_EXPORT
 void pw_resource_remove(struct pw_resource *resource)
 {
 	resource->removed = true;

src/pipewire/resource.h

@@ -87,6 +87,10 @@ pw_resource_new(struct pw_impl_client *client,	/**< the client owning the resour
 /** Destroy a resource */
 void pw_resource_destroy(struct pw_resource *resource);
 
+/** Remove a resource, like pw_resource_destroy but without sending a
+ * remove_id message to the client */
+void pw_resource_remove(struct pw_resource *resource);
+
 /** Get the client owning this resource */
 struct pw_impl_client *pw_resource_get_client(struct pw_resource *resource);