Use methods object for privs after Varnish refactoring.

src/vmod_gcrypt.c

@@ -749,7 +749,7 @@ vmod_random(VRT_CTX, struct VARGS(random)*args)
 
 	rnd_task->priv = rnd_blob;
 	rnd_task->len = sizeof(*rnd_blob);
-	rnd_task->free = NULL;
+	AZ(rnd_task->methods);
 	return rnd_blob;
 }
 
@@ -951,11 +951,12 @@ vmod_wipe(VRT_CTX, VCL_BLOB b)
 /* Function fileread */
 
 static void
-filedata_free(void *p)
+filedata_free(VRT_CTX, void *p)
 {
 	struct filedata_head *fhead;
 	struct filedata *f;
 
+	CHECK_OBJ_NOTNULL(ctx, VRT_CTX_MAGIC);
 	if (p == NULL)
 		return;
 	fhead = p;
@@ -981,6 +982,14 @@ filedata_free(void *p)
 	free(fhead);
 }
 
+#define VMOD_GCRYPT_FILE_MAGIC 0x9e381c85
+
+static const struct vmod_priv_methods file_priv_task_methods[1] = {{
+		.magic = VMOD_PRIV_METHODS_MAGIC,
+		.type = "vmod_gcrypt_file_priv_task",
+		.fini = filedata_free,
+	}};
+
 VCL_BLOB
 vmod_fileread(VRT_CTX, struct vmod_priv *task, VCL_STRING path)
 {
@@ -1014,7 +1023,7 @@ vmod_fileread(VRT_CTX, struct vmod_priv *task, VCL_STRING path)
 		VSLIST_INIT(fhead);
 		task->priv = fhead;
 		task->len = sizeof(*fhead);
-		task->free = filedata_free;
+		task->methods = file_priv_task_methods;
 	}
 	else
 		fhead = task->priv;