print out signed attribute

[JacobBarthelmeh]

$ ./smime-verify ~/Documents/wolfssl/certs/test/smime-test-canon.p7s ~/Documents/wolfssl/certs/ca-cert.der
Multi part message, signed data is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
Content found on verify : Content-Type: text/plain

This text/plain content has been signed with canonicalized CRLF line endings,
but it is added to the multipart message with non canonicalized line endings.

In order to match the hash, it will need to be canonicalized first.
Signing time attribute is :
	170D3231303433303232303231355A
Verify Success