Fixes CVE-2021-3578: possible remote code execution https://sourceforge.net/p/isync/mailman/message/37297759/ (cherry picked from commit 254a89e7d54c51c6e8f82f449714b2cbadb54e75)
Fixes CVE-2021-3578: possible remote code execution https://sourceforge.net/p/isync/mailman/message/37297759/ (cherry picked from commit 254a89e7d54c51c6e8f82f449714b2cbadb54e75)