pidgin/pidgin

Fix some issues scanbuild found in gtkthemes.c
release-2.x.y
2021-06-01, Gary Kramlich
f2cec5958ed7
Fix some issues scanbuild found in gtkthemes.c

Testing Done:
Verified scanbuild no longer detected an issue.

Reviewed at https://reviews.imfreedom.org/r/697/
#include "conversation.h"
PurpleAccount *purple_accounts_find_ext(const char *name, const char *protocol_id,
gboolean (*account_test)(const PurpleAccount *account));
PurpleAccount *purple_accounts_find_any(const char *name, const char *protocol);
PurpleAccount *purple_accounts_find_connected(const char *name, const char *protocol);