SDL: testdisplayinfo: use correct index variable

SDL Commits
1 
From d5fac067cd2f6d9509418a90c0895ece50708d71 Mon Sep 17 00:00:00 2001
From: capehill <[EMAIL REDACTED]>
Date: Sun, 26 Mar 2023 21:51:18 +0300
Subject: [PATCH] testdisplayinfo: use correct index variable

---
 test/testdisplayinfo.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/test/testdisplayinfo.c b/test/testdisplayinfo.c
index e3fd9ed32ac0..4762cd52ac19 100644
--- a/test/testdisplayinfo.c
+++ b/test/testdisplayinfo.c
@@ -89,7 +89,7 @@ int main(int argc, char *argv[])
         for (m = 0; m < num_modes; m++) {
             char prefix[64];
             (void)SDL_snprintf(prefix, sizeof(prefix), "    MODE %d", m);
-            print_mode(prefix, modes[i]);
+            print_mode(prefix, modes[m]);
         }
         SDL_free(modes);