patch 8.2.2746: check for duplicate arguments does not work

Problem:    Check for duplicate arguments does not work.
Solution:   Correct condition.
diff --git a/src/version.c b/src/version.c
index 346b5d1..bbbc92a 100644
--- a/src/version.c
+++ b/src/version.c
@@ -751,6 +751,8 @@
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    2746,
+/**/
     2745,
 /**/
     2744,