SDL: win32: Use the pending size during NCCALCSIZE

https://github.com/libsdl-org/SDL/commit/037cd25a2266ee757868c3c3fd5eea4217c7667c

From 037cd25a2266ee757868c3c3fd5eea4217c7667c Mon Sep 17 00:00:00 2001
From: Frank Praznik <[EMAIL REDACTED]>
Date: Thu, 9 Jan 2025 11:48:51 -0500
Subject: [PATCH] win32: Use the pending size during NCCALCSIZE

Non-resizable windows still need to apply the pending size, as they can be resized programmatically.

Fixes programmatically resizing windows without the WS_THICKFRAME style.
---
 src/video/windows/SDL_windowsevents.c | 11 ++++++++---
 src/video/windows/SDL_windowswindow.c |  2 +-
 2 files changed, 9 insertions(+), 4 deletions(-)

diff --git a/src/video/windows/SDL_windowsevents.c b/src/video/windows/SDL_windowsevents.c
index 95b208c25b676..9360857816d91 100644
--- a/src/video/windows/SDL_windowsevents.c
+++ b/src/video/windows/SDL_windowsevents.c
@@ -2020,10 +2020,15 @@ LRESULT CALLBACK WIN_WindowProc(HWND hwnd, UINT msg, WPARAM wParam, LPARAM lPara
                         params->rgrc[0] = info.rcWork;
                     }
                 }
-            } else if (!(window_flags & SDL_WINDOW_RESIZABLE)) {
+            } else if (!(window_flags & SDL_WINDOW_RESIZABLE) && !data->force_resizable) {
                 int w, h;
-                w = data->window->floating.w;
-                h = data->window->floating.h;
+                if (data->window->last_size_pending) {
+                    w = data->window->pending.w;
+                    h = data->window->pending.h;
+                } else {
+                    w = data->window->floating.w;
+                    h = data->window->floating.h;
+                }
                 params->rgrc[0].right = params->rgrc[0].left + w;
                 params->rgrc[0].bottom = params->rgrc[0].top + h;
             }
diff --git a/src/video/windows/SDL_windowswindow.c b/src/video/windows/SDL_windowswindow.c
index 77c9a139ffd8b..68e65847e62d0 100644
--- a/src/video/windows/SDL_windowswindow.c
+++ b/src/video/windows/SDL_windowswindow.c
@@ -162,7 +162,7 @@ static DWORD GetWindowStyle(SDL_Window *window)
     DWORD style = 0;
 
     if (SDL_WINDOW_IS_POPUP(window)) {
-        style |= WS_POPUP | WS_THICKFRAME;
+        style |= WS_POPUP;
     } else if (window->flags & SDL_WINDOW_FULLSCREEN) {
         style |= STYLE_FULLSCREEN;
     } else {