mailinfo: do not concatenate charset= attribute values from mime headers

2012-09-17T22:24:52Z

"Content-type: text/plain; charset=UTF-8" header should not appear twice in the input, but it is always better to gracefully deal with such a case. The current code concatenates the value to the values we have seen previously, producing nonsense such as "utf8UTF-8". Instead of concatenating, forget the previous value and use the last value we see. Signed-off-by: Junio C Hamano

git/t/t5100/patch0017, branch master

mailinfo: do not concatenate charset= attribute values from mime headers