SDL: Fixed uninitialized variable warning (284cf)

SDL Commits
1 
From 284cf1177829c69af80ce892d942f4ce9af26107 Mon Sep 17 00:00:00 2001
From: Sam Lantinga <[EMAIL REDACTED]>
Date: Thu, 15 Sep 2022 06:21:19 -0700
Subject: [PATCH] Fixed uninitialized variable warning

(cherry picked from commit 8a15a738f33f4cf1684d01e8b777e8b58fe393a5)
---
 src/render/opengles2/SDL_render_gles2.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/render/opengles2/SDL_render_gles2.c b/src/render/opengles2/SDL_render_gles2.c
index 492a0c1ba19b..29b050d0beae 100644
--- a/src/render/opengles2/SDL_render_gles2.c
+++ b/src/render/opengles2/SDL_render_gles2.c
@@ -493,7 +493,7 @@ GLES2_CacheProgram(GLES2_RenderData *data, GLuint vertex, GLuint fragment)
 static GLuint
 GLES2_CacheShader(GLES2_RenderData *data, GLES2_ShaderType type, GLenum shader_type)
 {
-    GLuint id;
+    GLuint id = 0;
     GLint compileSuccessful = GL_FALSE;
     int attempt, num_src;
     const GLchar *shader_src_list[2];