SDL: testmouse: add explicit int-cast to avoid warning about converting `float` to `int`

SDL Commits
1 
From 8770689525a3788bfd6b8ecae2207b00e3f71e23 Mon Sep 17 00:00:00 2001
From: Anonymous Maarten <[EMAIL REDACTED]>
Date: Thu, 6 Oct 2022 01:12:18 +0200
Subject: [PATCH] testmouse: add explicit int-cast to avoid warning about
 converting `float` to `int`

Emitted by MSVC
---
 test/testmouse.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/test/testmouse.c b/test/testmouse.c
index 27b34f315dad..b8fc440b97b0 100644
--- a/test/testmouse.c
+++ b/test/testmouse.c
@@ -202,10 +202,10 @@ loop(void *arg)
     /* Mouse wheel */
     SDL_SetRenderDrawColor(renderer, 0, 255, 128, 255);
     if (wheel_x_active) {
-            SDL_RenderDrawLine(renderer, wheel_x, 0, wheel_x, SCREEN_HEIGHT);
+        SDL_RenderDrawLine(renderer, (int)wheel_x, 0, (int)wheel_x, SCREEN_HEIGHT);
     }
     if (wheel_y_active) {
-            SDL_RenderDrawLine(renderer, 0, wheel_y, SCREEN_WIDTH, wheel_y);
+        SDL_RenderDrawLine(renderer, 0, (int)wheel_y, SCREEN_WIDTH, (int)wheel_y);
     }
 
     /* Objects from mouse clicks */