Update copyright year to 2013. 


git-svn-id: svn://svn.code.sf.net/p/tigervnc/code/trunk@5121 3789f03b-4d11-0410-bbf8-ca57d06f2519
diff --git a/vncviewer/vncviewer.cxx b/vncviewer/vncviewer.cxx
index 37d63a6..eaf94ba 100644
--- a/vncviewer/vncviewer.cxx
+++ b/vncviewer/vncviewer.cxx
@@ -74,7 +74,7 @@
 
 static const char aboutText[] = N_("TigerVNC Viewer %d-bit v%s (%s)\n"
                                    "%s\n"
-                                   "Copyright (C) 1999-2011 TigerVNC Team and many others (see README.txt)\n"
+                                   "Copyright (C) 1999-2013 TigerVNC Team and many others (see README.txt)\n"
                                    "See http://www.tigervnc.org for information on TigerVNC.");
 extern const char* buildTime;