updated for version 7.3.023

Problem:    External program may hang when it tries to write to the tty.
Solution:   Don't close the slave tty until after the child exits. (Nikola
            Knezevic)

src/version.c

@@ -714,6 +714,8 @@ static char *(features[]) =
 
 static int included_patches[] =
 {   /* Add new patch number below this line */
+/**/
+    23,
 /**/
     22,
 /**/