Ensure MVar usage is exception-safe.
Ensure MVar usage is exception-safe.

nsluss/websockets,jaspervdj/websockets,nsluss/websockets,nsluss/websockets,zodiac/websockets,zodiac/websockets,stormont/websockets,jaspervdj/websockets,stormont/websockets,jaspervdj/websockets,jaspervdj/websockets,zodiac/websockets,stormont/websockets,jaspervdj/websockets