SDL: Make sure our pixel size is up to date at window creation

SDL Commits
1 
From dfa832c5de8671c59150c05e32db9a2883069ab1 Mon Sep 17 00:00:00 2001
From: Sam Lantinga <[EMAIL REDACTED]>
Date: Fri, 10 Mar 2023 08:10:06 -0800
Subject: [PATCH] Make sure our pixel size is up to date at window creation

This guarantees that the application will always get SDL_EVENT_WINDOW_PIXEL_SIZE_CHANGED when a window is created.

Fixes https://github.com/libsdl-org/SDL/issues/7441
---
 src/video/SDL_video.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/src/video/SDL_video.c b/src/video/SDL_video.c
index 9f36c56443f7..be9722d51b28 100644
--- a/src/video/SDL_video.c
+++ b/src/video/SDL_video.c
@@ -1860,6 +1860,9 @@ SDL_Window *SDL_CreateWindow(const char *title, int w, int h, Uint32 flags)
         SDL_UpdateFullscreenMode(window, SDL_TRUE);
     }
 
+    /* Make sure window pixel size is up to date */
+    SDL_CheckWindowPixelSizeChanged(window);
+
     return window;
 }