Fix-up projectorganizer compile error Fixes the following error: prjorg-sidebar.c: In function 'prjorg_sidebar_get_expanded_paths': prjorg-sidebar.c:1565:16: error: returning 'void **' from a function with incompatible return type 'gchar **' {aka 'char **'} [-Wincompatible-pointer-types] 1565 | return g_ptr_array_free(expanded_paths, FALSE); | ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~