Devhelp: Unused function, fix memory leak
Treebrowser: fix leak + resource leak
Debugger: fix leaks
Debugger: fix leak in strcpy
Geanylua: fix leaks
Geanysendmail: fix mismatching allocation/deallocation
Geanyvc: fix leak
Geniuspaste: fix possible leak
Gproject: fix mismatching allocation/deallocation
Markdown: g_key_file_to_data never throws error