sdl12-compat: minor warning fixes (3e2ca)

SDL Commits
1 
From 3e2ca9adc55bbf4d1b1624983662602431ba33a8 Mon Sep 17 00:00:00 2001
From: Ozkan Sezer <[EMAIL REDACTED]>
Date: Fri, 5 Mar 2021 12:32:10 +0300
Subject: [PATCH] minor warning fixes

---
 src/SDL12_compat.c | 8 ++++----
 1 file changed, 4 insertions(+), 4 deletions(-)

diff --git a/src/SDL12_compat.c b/src/SDL12_compat.c
index fa4ac72..2c9d514 100644
--- a/src/SDL12_compat.c
+++ b/src/SDL12_compat.c
@@ -722,7 +722,7 @@ static Uint8 KeyState[SDLK12_LAST];
 static SDL_bool MouseInputIsRelative = SDL_FALSE;
 static SDL_Point MousePositionWhenRelative = { 0, 0 };
 static OpenGLEntryPoints OpenGLFuncs;
-static SDL_bool UseOpenGLLogicalScaling = SDL_FALSE;
+/*static SDL_bool UseOpenGLLogicalScaling = SDL_FALSE;*/
 static int OpenGLLogicalScalingWidth = 0;
 static int OpenGLLogicalScalingHeight = 0;
 static GLuint OpenGLLogicalScalingFBO = 0;
@@ -2970,8 +2970,8 @@ LoadOpenGLFunctions(void)
     #define OPENGL_SYM(ext,rc,fn,params,args,ret) OpenGLFuncs.fn = (OpenGLFuncs.SUPPORTS_##ext) ? SDL20_GL_GetProcAddress(#fn) : NULL;
     #include "SDL20_syms.h"
 
-    version = OpenGLFuncs.glGetString(GL_VERSION);
-    if ((!version) || (SDL20_sscanf(version, "%d.%d", &major, &minor) != 2)) {
+    version = (const char *) OpenGLFuncs.glGetString(GL_VERSION);
+    if (!version || (SDL20_sscanf(version, "%d.%d", &major, &minor) != 2)) {
         major = minor = 0;
     }
 
@@ -3193,7 +3193,7 @@ SDL_SetVideoMode(int width, int height, int bpp, Uint32 flags12)
 
         VideoSurface12->flags |= SDL12_OPENGL;
 
-        // Try to set up a logical scaling
+        /* Try to set up a logical scaling */
         if (use_gl_scaling) {
             if (!InitializeOpenGLScaling(width, height)) {
                 use_gl_scaling = SDL_FALSE;