Fix build on 32-bit and 64-bit Windows


git-svn-id: svn://svn.code.sf.net/p/tigervnc/code/trunk@5051 3789f03b-4d11-0410-bbf8-ca57d06f2519
diff --git a/vncviewer/vncviewer.cxx b/vncviewer/vncviewer.cxx
index 6cf1d89..37d63a6 100644
--- a/vncviewer/vncviewer.cxx
+++ b/vncviewer/vncviewer.cxx
@@ -444,6 +444,7 @@
 
   Socket *sock = NULL;
 
+#ifndef WIN32
   /* Specifying -via and -listen together is nonsense */
   if (listenMode && strlen(via.getValueStr()) > 0) {
     vlog.error("Parameters -listen and -via are incompatible");
@@ -451,6 +452,7 @@
     exit_vncviewer();
     return 1;
   }
+#endif
 
   if (listenMode) {
     try {