tty/vt: consolemap: use ARRAY_SIZE()

The code uses constants as bounds in loops. Use ARRAY_SIZE() with
appropriate parameters instead. This makes the loop bounds obvious.

Reviewed-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com>
Signed-off-by: Jiri Slaby <jslaby@suse.cz>
Link: https://lore.kernel.org/r/20220607104946.18710-1-jslaby@suse.cz
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/tty/vt/consolemap.c

@@ -408,7 +408,7 @@ static void con_release_unimap(struct uni_pagedir *p)
 		}
 		p->uni_pgdir[i] = NULL;
 	}
-	for (i = 0; i < 4; i++) {
+	for (i = 0; i < ARRAY_SIZE(p->inverse_translations); i++) {
 		kfree(p->inverse_translations[i]);
 		p->inverse_translations[i] = NULL;
 	}
@@ -798,7 +798,7 @@ u32 conv_8bit_to_uni(unsigned char c)
 int conv_uni_to_8bit(u32 uni)
 {
 	int c;
-	for (c = 0; c < 0x100; c++)
+	for (c = 0; c < ARRAY_SIZE(translations[USER_MAP]); c++)
 		if (translations[USER_MAP][c] == uni ||
 		   (translations[USER_MAP][c] == (c | 0xf000) && uni == c))
 			return c;