Fix memory leak in remove_notify_needed_optdepends

Also add pactest which captures this leak when run under valgrind.

Reported-by: Sergey Petrenko
Signed-off-by: Allan McRae <allan@archlinux.org>
(cherry picked from commit fac4831a091eda447780d5d1e1e572b14ebb0338)

1 files changed, 1 insertions, 0 deletions

diff --git a/lib/libalpm/remove.c b/lib/libalpm/remove.c
index 45f7c2f4..173dbc69 100644
--- a/lib/libalpm/remove.c
+++ b/lib/libalpm/remove.c
@@ -189,6 +189,7 @@ static void remove_notify_needed_optdepends(alpm_handle_t *handle, alpm_list_t *
 					};
 					EVENT(handle, &event);
 				}
+				free(optstring);
 			}
 		}
 	}