SDL: Fixed build (1fdcb)

SDL Commits
1 
From 1fdcb610ff4d26bc95a7425a628a1c0ec14f7e32 Mon Sep 17 00:00:00 2001
From: Sam Lantinga <[EMAIL REDACTED]>
Date: Tue, 30 May 2023 05:52:07 -0700
Subject: [PATCH] Fixed build

---
 src/video/cocoa/SDL_cocoawindow.m | 2 --
 1 file changed, 2 deletions(-)

diff --git a/src/video/cocoa/SDL_cocoawindow.m b/src/video/cocoa/SDL_cocoawindow.m
index f450b2fb5c7f..92fc803e1e1c 100644
--- a/src/video/cocoa/SDL_cocoawindow.m
+++ b/src/video/cocoa/SDL_cocoawindow.m
@@ -2077,12 +2077,10 @@ void Cocoa_SetWindowSize(SDL_VideoDevice *_this, SDL_Window *window)
         SDL_CocoaWindowData *windata = (__bridge SDL_CocoaWindowData *)window->driverdata;
         NSWindow *nswindow = windata.nswindow;
         NSRect rect = [nswindow contentRectForFrameRect:[nswindow frame]];
-        BOOL fullscreen;
         Uint64 moveHack;
 
         rect.size.width = window->w;
         rect.size.height = window->h;
-        fullscreen = (window->flags & SDL_WINDOW_FULLSCREEN) ? YES : NO;
 
         moveHack = s_moveHack;
         s_moveHack = 0;