Incorrect getl responses

[reported by Manik]

set testkey 0 2 9
testvalue
STORED
getl testkey 15
VALUE testkey 0 9 47
testvalue

<< sleep here for 5 seconds >>

END
get testkey
END

cas testkey 0 0 13 47
new_testvalue
EXISTS <------------------ This is wrong. Should be NOT FOUND.

In the absence of the get command between getl and the cas, I see something different.

set testkey 0 2 9
testvalue
STORED
getl testkey 15
VALUE testkey 0 9 49
testvalue

<< sleep here for 5 seconds>>

END
cas testkey 0 0 13 49
new_testvalue
STORED