zmsg_remove updates msg size no matter if frame is/isn't a member of the msg #1026
Description
Please see https://github.com/zeromq/czmq/blob/master/src/zmsg.c#L485 (zmsg_remove)
It could be the case where the frame doesn't really belong to this message, as stated in the comments for both zmsg_remove and zlist_remove. But zmsg_remove directly minus its size without testing membership.