patch 7.4.1406

Problem:    Leaking memory in cs_print_tags_priv().
Solution:   Free tbuf. (idea by Forrest Fleming)

src/version.c

@@ -748,6 +748,8 @@ static char *(features[]) =
 
 static int included_patches[] =
 {   /* Add new patch number below this line */
+/**/
+    1406,
 /**/
     1405,
 /**/