patch 8.0.1740: warning for signed-unsigned incompatibility

Problem:    Warning for signed-unsigned incompatibility.
Solution:   Change type from "char *" to "char_u *". (John Marriott)

Author: brammool

src/ex_cmds2.c

@@ -2751,7 +2751,7 @@ ex_args(exarg_T *eap)
 	 */
 	if (ARGCOUNT > 0)
 	{
-	    char **items = (char **)alloc(sizeof(char *) * ARGCOUNT);
+	    char_u **items = (char_u **)alloc(sizeof(char_u *) * ARGCOUNT);
 
 	    if (items != NULL)
 	    {
@@ -2760,7 +2760,7 @@ ex_args(exarg_T *eap)
 		gotocmdline(TRUE);
 
 		for (i = 0; i < ARGCOUNT; ++i)
-		    items[i] = (char *)alist_name(&ARGLIST[i]);
+		    items[i] = alist_name(&ARGLIST[i]);
 		list_in_columns(items, ARGCOUNT, curwin->w_arg_idx);
 		vim_free(items);
 	    }

src/version.c

@@ -761,6 +761,8 @@ static char *(features[]) =
 
 static int included_patches[] =
 {   /* Add new patch number below this line */
+/**/
+    1740,
 /**/
     1739,
 /**/