Revert "1"

This reverts commit e3329b73f23fd3f75553ceb47f9e82da169abeab.

Author: DifferentialOrange

box_error.go

@@ -1,5 +1,7 @@
 package tarantool
 
+const error_extId = 3
+
 // BoxError is a type representing Tarantool `box.error` object: a single
 // MP_ERROR_STACK object with a link to the previous stack error.
 type BoxError struct {

msgpack.go

@@ -48,3 +48,7 @@ func msgpackIsString(code byte) bool {
 	return msgpcode.IsFixedString(code) || code == msgpcode.Str8 ||
 		code == msgpcode.Str16 || code == msgpcode.Str32
 }
+
+func init() {
+	msgpack.RegisterExt(error_extId, &BoxError{})
+}

msgpack_v5.go

@@ -52,3 +52,7 @@ func msgpackIsString(code byte) bool {
 	return msgpcode.IsFixedString(code) || code == msgpcode.Str8 ||
 		code == msgpcode.Str16 || code == msgpcode.Str32
 }
+
+func init() {
+	msgpack.RegisterExt(error_extId, (*BoxError)(nil))
+}