[gnome-latex] Synctex: fix compil warning (-Wcast-function-type)

[Sébastien Wilmet <swilmet src gnome org>]

commit 4db225b65725cdd60c7450f758149f97a0d1870a
Author: Sébastien Wilmet <swilmet gnome org>
Date:   Thu May 10 19:04:22 2018 +0200

    Synctex: fix compil warning (-Wcast-function-type)
    
    This warning is enabled by -Wextra.

 src/liblatexila/latexila-synctex.c | 10 +++++++++-
 1 file changed, 9 insertions(+), 1 deletion(-)
---
diff --git a/src/liblatexila/latexila-synctex.c b/src/liblatexila/latexila-synctex.c
index 43dcef8..be8ea94 100644
--- a/src/liblatexila/latexila-synctex.c
+++ b/src/liblatexila/latexila-synctex.c
@@ -476,6 +476,14 @@ connect_evince_window_finish (LatexilaSynctex *synctex,
        g_task_propagate_boolean (G_TASK (result), NULL);
 }
 
+static void
+connect_evince_window_simple_cb (GObject      *source_object,
+                                GAsyncResult *result,
+                                gpointer      user_data)
+{
+       connect_evince_window_finish (LATEXILA_SYNCTEX (source_object), result);
+}
+
 /**
  * latexila_synctex_connect_evince_window:
  * @synctex: the #LatexilaSynctex instance.
@@ -491,7 +499,7 @@ latexila_synctex_connect_evince_window (LatexilaSynctex *synctex,
 {
        connect_evince_window_async (synctex,
                                     pdf_uri,
-                                    (GAsyncReadyCallback) connect_evince_window_finish,
+                                    connect_evince_window_simple_cb,
                                     NULL);
 }