[gnome-chess] ChessClock: verify clock state before (un)pause

[Michael Catanzaro <mcatanzaro src gnome org>]

commit 91810128c6e2a23a8b0058bf7c8132f4c653b4cd
Author: Michael Catanzaro <mike catanzaro gmail com>
Date:   Sat Aug 3 09:20:09 2013 -0500

    ChessClock: verify clock state before (un)pause
    
    If the clock is active, don't allow unpause.  If it's not, don't allow
    unpause.  Checking if the timer exists is not sufficient here.

 src/chess-clock.vala |   10 +++++-----
 1 files changed, 5 insertions(+), 5 deletions(-)
---
diff --git a/src/chess-clock.vala b/src/chess-clock.vala
index 1f3e5da..7fb70c3 100644
--- a/src/chess-clock.vala
+++ b/src/chess-clock.vala
@@ -79,14 +79,14 @@ public class ChessClock : Object
         _black_initial_ms = black_initial_seconds * 1000;
     }
 
-    private bool is_started
+    private bool is_active
     {
         get { return expire_timeout_id != 0; }
     }
     
     public void start ()
     {
-        if (is_started)
+        if (is_active)
             return;
 
         if (timer == null)
@@ -128,7 +128,7 @@ public class ChessClock : Object
 
     public void stop ()
     {
-        if (!is_started)
+        if (!is_active)
             return;
 
         timer.stop ();
@@ -153,7 +153,7 @@ public class ChessClock : Object
 
     public void pause ()
     {
-        if (timer == null)
+        if (!is_active)
             return;
 
         timer.stop ();
@@ -162,7 +162,7 @@ public class ChessClock : Object
 
     public void unpause ()
     {
-        if (timer == null)
+        if (is_active)
             return;
 
         timer  continue ();