fix: panic occurred when receive voice record in group message

message/message.go

@@ -672,6 +672,9 @@ func ParseMessageElems(elems []*msg.Elem) []IMessageElement {
 				}
 				return []IMessageElement{sticker} // sticker 永远为单独消息
 			case 48:
+				bt := elem.CommonElem.BusinessType.Unwrap()
+				// 20 for group, 10 for friend, 22 or 12 for voice record
+				if bt == 20 || bt == 10 {
 					img := &msg.PbMultiMediaElement{}
 					_ = proto.Unmarshal(elem.CommonElem.PbElem, img)
 					domain := img.Elem1.Data.Domain.Unwrap()
@@ -700,6 +703,7 @@ func ParseMessageElems(elems []*msg.Elem) []IMessageElement {
 						newImg = true
 					}
 				}
+			}
 
 		}
 	}