patch 8.2.4364: MS-Windows: still running out of memory for a very long line

Problem:    MS-Windows: still running out of memory for a very long line.
Solution:   Check for negative length.

src/indent.c

@@ -1726,7 +1726,7 @@ ex_retab(exarg_T *eap)
 			len = num_spaces + num_tabs;
 			old_len = (long)STRLEN(ptr);
 			new_len = old_len - col + start_col + len + 1;
-			if (new_len >= MAXCOL)
+			if (new_len <= 0 || new_len >= MAXCOL)
 			{
 			    emsg(_(e_resulting_text_too_long));
 			    break;

src/version.c

@@ -750,6 +750,8 @@ static char *(features[]) =
 
 static int included_patches[] =
 {   /* Add new patch number below this line */
+/**/
+    4364,
 /**/
     4363,
 /**/