[vte] widget: Fix bell timestamp update

[Christian Persch <chpe src gnome org>]

commit 72cdf6e6579917c351ab324dd313d4c51d7e5687
Author: Christian Persch <chpe src gnome org>
Date:   Sun Mar 4 11:22:33 2018 +0100

    widget: Fix bell timestamp update
    
    Only update the timestamp when emitting the signal, not
    every time a bell was pending.

 src/vte.cc |    5 +++--
 1 files changed, 3 insertions(+), 2 deletions(-)
---
diff --git a/src/vte.cc b/src/vte.cc
index 57aa197..9e18df7 100644
--- a/src/vte.cc
+++ b/src/vte.cc
@@ -11085,9 +11085,10 @@ VteTerminalPrivate::emit_pending_signals()
                 if ((timestamp - m_bell_timestamp) >= VTE_BELL_MINIMUM_TIME_DIFFERENCE) {
                         beep();
                         emit_bell();
-                }
 
-                m_bell_timestamp = timestamp;
+                        m_bell_timestamp = timestamp;
+                 }
+
                 m_bell_pending = false;
         }