NSM: Clean up compiler warnings.

session-manager/src/nsmd.C

@@ -21,7 +21,9 @@
 
 #include "debug.h"
 
+#ifndef _GNU_SOURCE
 #define _GNU_SOURCE
+#endif
 
 #include <errno.h>
 #include <string.h>

session-manager/src/session-manager.C

@@ -475,7 +475,7 @@ public:
 
     const char *session_name ( void ) const
         {
-            clients_pack->parent()->label();
+            return clients_pack->parent()->label();
         }
 
     void
@@ -901,7 +901,7 @@ ping ( void * )
 }
 
 void
-cb_main ( Fl_Widget *o, void *v )
+cb_main ( Fl_Widget *, void * )
 {
     if ( Fl::event_key() != FL_Escape )
     {