patch 8.2.4289: warnings reported by MSVC

Problem:    Warnings reported by MSVC.
Solution:   Rename variables and other fixes. (Ken Takata, closes #9689)
diff --git a/src/version.c b/src/version.c
index cc4e7d2..8ea43b5 100644
--- a/src/version.c
+++ b/src/version.c
@@ -747,6 +747,8 @@
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    4289,
+/**/
     4288,
 /**/
     4287,
@@ -9468,7 +9470,7 @@
     // The rightmost column doesn't need a separator.
     // Sacrifice it to fit in one more column if possible.
     ncol = (int) (Columns + 1) / width;
-    nrow = item_count / ncol + (item_count % ncol ? 1 : 0);
+    nrow = item_count / ncol + ((item_count % ncol) ? 1 : 0);
 
     // "i" counts columns then rows.  "idx" counts rows then columns.
     for (i = 0; !got_int && i < nrow * ncol; ++i)