bash-4.0 regression with comments in subshelled case

[Mike Frysinger]

code that uses case statements in a subshell and then uses comments causes 
bash to trigger a parsing error:
$ cat test.sh
echo $(case a in (a) echo ok ;; # comment
)
$ sh ./test.sh
./test.sh: line 1: unexpected EOF while looking for matching `)'
./test.sh: line 3: syntax error: unexpected end of file

bash-3.2 consumes this just fine ...
-mike

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