patch 8.2.5170: tiny issues

Problem:    Tiny issues.
Solution:   Tiny improvements.

src/misc1.c

@@ -2404,7 +2404,8 @@ get_cmd_output_as_rettv(
 
     if (in_vim9script()
 	    && (check_for_string_arg(argvars, 0) == FAIL
-		|| check_for_opt_string_or_number_or_list_arg(argvars, 1) == FAIL))
+		|| check_for_opt_string_or_number_or_list_arg(argvars, 1)
+								      == FAIL))
 	return;
 
     if (argvars[1].v_type != VAR_UNKNOWN)

src/screen.c

@@ -4133,7 +4133,7 @@ screen_del_lines(
 skip_showmode()
 {
     // Call char_avail() only when we are going to show something, because it
-    // takes a bit of time.  redrawing() may also call char_avail_avail().
+    // takes a bit of time.  redrawing() may also call char_avail().
     if (global_busy
 	    || msg_silent != 0
 	    || !redrawing()

src/version.c

@@ -735,6 +735,8 @@ static char *(features[]) =
 
 static int included_patches[] =
 {   /* Add new patch number below this line */
+/**/
+    5170,
 /**/
     5169,
 /**/

src/vim.h

@@ -1653,7 +1653,7 @@ void *vim_memset(void *, int, size_t);
 
 /*
  * defines to avoid typecasts from (char_u *) to (char *) and back
- * (vim_strchr() and vim_strrchr() are now in alloc.c)
+ * (vim_strchr() and vim_strrchr() are now in strings.c)
  */
 #define STRLEN(s)	    strlen((char *)(s))
 #define STRCPY(d, s)	    strcpy((char *)(d), (char *)(s))