fixup: reverted the last Scintilla patch and unref Scintilla objects via g_object_unref()

* Turns out that using gtk_widget_destroy(), the finalize handler never gets called!?
  This means we were leaking memory.
* Using g_object_unref() fixes that and the initial Scintilla patch is no longer necessary.
* There have previously been use-after-free bugs when *not* using gtk_widget_destroy().
  This has apparently been fixed in the meantime in Scintilla.

1 files changed, 0 insertions, 0 deletions

diff --git a/contrib/scintilla b/contrib/scintilla
-Subproject a3a518d62945ee8ce6d6122549bcc230b92da88
+Subproject de2ed1d4bfc55dcca30f74790a3b4f7931b0803