patch 8.2.3460: some type casts are not needed

Problem:    Some type casts are not needed.
Solution:   Remove unnecessary type casts. (closes #8934)
diff --git a/src/version.c b/src/version.c
index 8436095..9331e34 100644
--- a/src/version.c
+++ b/src/version.c
@@ -758,6 +758,8 @@
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    3460,
+/**/
     3459,
 /**/
     3458,
@@ -7746,7 +7748,7 @@
     static void
 version_msg_wrap(char_u *s, int wrap)
 {
-    int		len = (int)vim_strsize(s) + (wrap ? 2 : 0);
+    int		len = vim_strsize(s) + (wrap ? 2 : 0);
 
     if (!got_int && len < (int)Columns && msg_col + len >= (int)Columns
 								&& *s != '\n')
@@ -7798,7 +7800,7 @@
     // width.
     for (i = 0; size < 0 ? items[i] != NULL : i < size; ++i)
     {
-	int l = (int)vim_strsize(items[i]) + (i == current ? 2 : 0);
+	int l = vim_strsize(items[i]) + (i == current ? 2 : 0);
 
 	if (l > width)
 	    width = l;