Enable setDesktopSize feature.

git-svn-id: svn://svn.code.sf.net/p/tigervnc/code/trunk@4884 3789f03b-4d11-0410-bbf8-ca57d06f2519
diff --git a/java/com/tigervnc/vncviewer/CConn.java b/java/com/tigervnc/vncviewer/CConn.java
index 053bef2..df2d315 100644
--- a/java/com/tigervnc/vncviewer/CConn.java
+++ b/java/com/tigervnc/vncviewer/CConn.java
@@ -188,6 +188,7 @@
     }
     cp.supportsDesktopResize = true;
     cp.supportsExtendedDesktopSize = true;
+    cp.supportsSetDesktopSize = true;
     cp.supportsClientRedirect = true;
     cp.supportsDesktopRename = true;
     cp.supportsLocalCursor = viewer.useLocalCursor.getValue();