Add whitespace

Signed-off-by: Jean-Baptiste Kempf <jb@videolan.org>

modules/gui/qt4/qt4.cpp

@@ -158,7 +158,7 @@ static void ShowDialog   ( intf_thread_t *, int, int, intf_dialog_args_t * );
 #define QT_NATIVEOPEN_TEXT N_( "Embed the file browser in open dialog" )
 
 #define FULLSCREEN_NUMBER_TEXT N_( "Define which screen fullscreen goes" )
-#define FULLSCREEN_NUMBER_LONGTEXT N_( "Screennumber of fullscreen, instead of" \
+#define FULLSCREEN_NUMBER_LONGTEXT N_( "Screennumber of fullscreen, instead of " \
                                        "same screen where interface is" )
 
 #define QT_AUTOLOAD_EXTENSIONS_TEXT N_( "Load extensions on startup" )