patch 9.0.1652: unclear why syntax test fails on Mac

Problem:    Unclear why syntax test fails on Mac.
Solution:   Echo v:errors when it's not empty.
diff --git a/src/version.c b/src/version.c
index 6eef082..3316979 100644
--- a/src/version.c
+++ b/src/version.c
@@ -696,6 +696,8 @@
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    1652,
+/**/
     1651,
 /**/
     1650,