SDL: examples, affine-textures: fix RISC-OS build.

SDL Commits
1 
From 87e6d2250f2109a6bba24ec11d39d3f5893c76dc Mon Sep 17 00:00:00 2001
From: Ozkan Sezer <[EMAIL REDACTED]>
Date: Fri, 28 Mar 2025 20:56:50 +0300
Subject: [PATCH] examples, affine-textures: fix RISC-OS build.

---
 examples/renderer/19-affine-textures/affine-textures.c | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/examples/renderer/19-affine-textures/affine-textures.c b/examples/renderer/19-affine-textures/affine-textures.c
index eb08b77f2e5c6..e66938f8105a9 100644
--- a/examples/renderer/19-affine-textures/affine-textures.c
+++ b/examples/renderer/19-affine-textures/affine-textures.c
@@ -96,7 +96,9 @@ SDL_AppResult SDL_AppIterate(void *appstate)
     };
 
     float corners[16];
-    for (int i = 0; i < 8; i++) {
+    int i;
+
+    for (i = 0; i < 8; i++) {
         const float x = (i & 1) ? -0.5f : 0.5f;
         const float y = (i & 2) ? -0.5f : 0.5f;
         const float z = (i & 4) ? -0.5f : 0.5f;
@@ -107,7 +109,7 @@ SDL_AppResult SDL_AppIterate(void *appstate)
     SDL_SetRenderDrawColor(renderer, 0, 0, 0, SDL_ALPHA_OPAQUE);
     SDL_RenderClear(renderer);
 
-    for (int i = 1; i < 7; i++) {
+    for (i = 1; i < 7; i++) {
         const int dir = 3 & ((i & 4) ? ~i : i);
         const int odd = (i & 1) ^ ((i & 2) >> 1) ^ ((i & 4) >> 2);
         if (0 < (odd ? 1.0f : -1.0f) * mat[5 + dir]) continue;