pidgin/pidgin

Fix some double frees that scanbuild found
release-2.x.y
2021-06-01, Gary Kramlich
3e498730f8ca
Fix some double frees that scanbuild found

Testing Done:
Verified scanbuild no longer detected the errors.

Reviewed at https://reviews.imfreedom.org/r/708/
How to build Pidgin for Windows using MinGW
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For the latest build instructions, please refer to:
http://developer.pidgin.im/wiki/BuildingWinPidgin