patch 8.2.0013: not using a typedef for condstack

Problem:    Not using a typedef for condstack.
Solution:   Add a typedef.
diff --git a/src/version.c b/src/version.c
index 27a42e0..fec1465 100644
--- a/src/version.c
+++ b/src/version.c
@@ -743,6 +743,8 @@
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    13,
+/**/
     12,
 /**/
     11,