fix: fix broadcast msg chan block issue#8

Aaron-cdx wants to merge 1 commit intodustin:masterdustin/go-broadcast:masterfrom

Aaron-cdx:duanxi.cao/feature/fix-broadcast-msg-chan-block-issueAaron-cdx/go-broadcast:duanxi.cao/feature/fix-broadcast-msg-chan-block-issueCopy head branch name to clipboard