Refactor retval handling in vped_deliver()

src/vdp_pesi.c

@@ -901,7 +901,7 @@ vdp_pesi_bytes(struct vdp_ctx *vdx, enum vdp_action act, void **priv,
 		parent_gzip = &node->parent->nexus.gzip;
 
 	pp = ptr;
-	while (1) {
+	while (retval == 0 && tree->retval == 0) {
 		incl_cont = 0;
 		switch (pecx->state) {
 		case 0:
@@ -1103,11 +1103,10 @@ vdp_pesi_bytes(struct vdp_ctx *vdx, enum vdp_action act, void **priv,
 			WRONG("FOO");
 			break;
 		}
-		if (retval)
-			tree->retval = retval;
-		if (tree->retval)
-			return (tree->retval);
 	}
+	if (retval != 0 && tree->retval == 0)
+		tree->retval = retval;
+	return (tree->retval);
 }
 
 const struct vdp VDP_pesi = {