git-send-email: use sanitized address when reading mbox body

Addresses that are mentioned on the trailers in the commit log messages (e.g., "Reviewed-by") are added to the "Cc:" list by "git send-email". These hand-written addresses, however, may be malformed (e.g., having unquoted "." and other punctutation marks in the display-name part) and can upset MTA. The code does use the sanitize_address() helper on these address-looking strings to turn them into valid addresses, but it is used only to see if the address should be suppressed. The original string taken from the message is added to the @cc list if the code decides the address is not suppressed. Because the addresses on trailer lines are hand-written and more likely to contain malformed addresses, when adding to the @cc list, use the result from sanitize_address, not the original. Note that we do not modify the behaviour for addresses taken from the e-mail headers, as they are more likely to be machine generated and well-formed. Signed-off-by: Csókás, Bence <csokas.bence@prolan.hu> Signed-off-by: Junio C Hamano <gitster@pobox.com>