patch 8.2.0344: ":def" not skipped properly

Problem:    ":def" not skipped properly.
Solution:   Add CMD_def to list of commands the require evaluation even when
            not being executed.
diff --git a/src/version.c b/src/version.c
index 56a0aee..40c3c75 100644
--- a/src/version.c
+++ b/src/version.c
@@ -739,6 +739,8 @@
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    344,
+/**/
     343,
 /**/
     342,