patch 8.0.0328: the "zero count" error doesn't have a number

Problem:    The "zero count" error doesn't have a number. (Hirohito Higashi)
Solution:   Give it a number and be more specific about the error.
diff --git a/src/version.c b/src/version.c
index e95fed6..08d377d 100644
--- a/src/version.c
+++ b/src/version.c
@@ -765,6 +765,8 @@
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    328,
+/**/
     327,
 /**/
     326,