[vte] app: Fix a mem leak

[Christian Persch <chpe src gnome org>]

commit bca23e844378e57294c96661b5051ff199736cdc
Author: Christian Persch <chpe src gnome org>
Date:   Sat Nov 18 19:13:17 2017 +0100

    app: Fix a mem leak

 src/app/app.cc |    1 +
 1 files changed, 1 insertions(+), 0 deletions(-)
---
diff --git a/src/app/app.cc b/src/app/app.cc
index cfb4d28..e882681 100644
--- a/src/app/app.cc
+++ b/src/app/app.cc
@@ -1323,6 +1323,7 @@ window_update_paste_sensitivity(VteappWindow* window)
         bool can_paste = false;
         if (gtk_clipboard_wait_for_targets(window->clipboard, &targets, &n_targets)) {
                 can_paste = gtk_targets_include_text(targets, n_targets);
+                g_free(targets);
         }
 
         auto action = g_action_map_lookup_action(G_ACTION_MAP(window), "copy");