SDL: Fixed compile warning

SDL Commits
1 
From 3b083b9911d444899dd81efb9816890362e3c442 Mon Sep 17 00:00:00 2001
From: Sam Lantinga <[EMAIL REDACTED]>
Date: Sat, 8 Jan 2022 14:07:42 -0800
Subject: [PATCH] Fixed compile warning

---
 src/render/SDL_render.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/src/render/SDL_render.c b/src/render/SDL_render.c
index c23e01c40c5..dfbcbe3f566 100644
--- a/src/render/SDL_render.c
+++ b/src/render/SDL_render.c
@@ -2843,7 +2843,7 @@ static int plotLineLow(SDL_Renderer *renderer, float x0, float y0, float x1, flo
             D += 2*dy;
         }
     }
-    render_count = (tmp - points);
+    render_count = (int)(tmp - points);
 
     if (!draw_last) {
         --render_count;
@@ -2901,7 +2901,7 @@ static int plotLineHigh(SDL_Renderer *renderer, float x0, float y0, float x1, fl
             D += 2*dx;
         }
     }
-    render_count = (tmp - points);
+    render_count = (int)(tmp - points);
 
     if (!draw_last) {
         --render_count;