[gnome-commander/gcmd-1-2-8] Safety precautions for g_mutex_lock() and g_mutex_unlock()

[Piotr Eljasiak <epiotr src gnome org>]

commit 8c285bb1231d7ebb991aab6d3840df08f2733c2b
Author: Piotr Eljasiak <epiotr src gnome org>
Date:   Fri Apr 8 21:16:57 2011 +0200

    Safety precautions for g_mutex_lock() and g_mutex_unlock()

 src/gnome-cmd-search-dialog.cc |    6 ++++--
 1 files changed, 4 insertions(+), 2 deletions(-)
---
diff --git a/src/gnome-cmd-search-dialog.cc b/src/gnome-cmd-search-dialog.cc
index 7a5783e..0b5a565 100644
--- a/src/gnome-cmd-search-dialog.cc
+++ b/src/gnome-cmd-search-dialog.cc
@@ -377,7 +377,8 @@ static gpointer perform_search_operation (SearchData *data)
 
 static gboolean update_search_status_widgets (SearchData *data)
 {
-    g_mutex_lock (data->pdata.mutex);
+    if (data->pdata.mutex)
+        g_mutex_lock (data->pdata.mutex);
 
     // Add all files found since last update to the list
     for (GList *files = data->pdata.files; files; files = files->next)
@@ -395,7 +396,8 @@ static gboolean update_search_status_widgets (SearchData *data)
     // Update the progress bar
     progress_bar_update (data->dialog->priv->pbar, PBAR_MAX);
 
-    g_mutex_unlock (data->pdata.mutex);
+    if (data->pdata.mutex)
+        g_mutex_unlock (data->pdata.mutex);
 
     if (data->search_done)
     {