[commit: stm] master: isEmptyTMVar: remove bogus comment, cut and pasted from isEmptyMVar (57bec25)

[Simon Marlow]

Repository : ssh://darcs.haskell.org//srv/darcs/packages/stm

On branch  : master

http://hackage.haskell.org/trac/ghc/changeset/57bec25b77760f3eba078b3146b31db8269f29b8

>---------------------------------------------------------------

commit 57bec25b77760f3eba078b3146b31db8269f29b8
Author: Simon Marlow <marlowsd at gmail.com>
Date:   Tue Nov 22 16:42:52 2011 +0000

    isEmptyTMVar: remove bogus comment, cut and pasted from isEmptyMVar

>---------------------------------------------------------------

 Control/Concurrent/STM/TMVar.hs |    5 -----
 1 files changed, 0 insertions(+), 5 deletions(-)

diff --git a/Control/Concurrent/STM/TMVar.hs b/Control/Concurrent/STM/TMVar.hs
index 653736f..698673a 100644
--- a/Control/Concurrent/STM/TMVar.hs
+++ b/Control/Concurrent/STM/TMVar.hs
@@ -140,11 +140,6 @@ swapTMVar (TMVar t) new = do
     Just old -> do writeTVar t (Just new); return old
 
 -- |Check whether a given 'TMVar' is empty.

>---------------------------------------------------------------

--- Notice that the boolean value returned  is just a snapshot of
--- the state of the 'TMVar'. By the time you get to react on its result,
--- the 'TMVar' may have been filled (or emptied) - so be extremely
--- careful when using this operation.   Use 'tryTakeTMVar' instead if possible.
 isEmptyTMVar :: TMVar a -> STM Bool
 isEmptyTMVar (TMVar t) = do
   m <- readTVar t