fix issues found by svace static code analyzer

jstedfast / gmime

A C/C++ MIME creation and parser library with support for S/MIME, PGP, and Unix mbox spools.

GNU Lesser General Public License v2.1

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fix issues found by svace static code analyzer #110

Closed sigasigasiga closed 2 years ago

sigasigasiga commented 2 years ago

each commit here represents a fix for a separate issue found by svace. i hope each commit message is clear enough so you can understand the essence of each problem

jstedfast commented 2 years ago

Looked good! Thanks!