Fix DPI-raised SDL_WINDOWEVENT_SIZE_CHANGED with event callback.

Move the sending of this event down so stuff like calling SDL_GL_GetDrawableSize() from a callback reports the new size instead of the old one.

src/video/windows/SDL_windowsevents.c

@@ -1534,15 +1534,6 @@ WIN_WindowProc(HWND hwnd, UINT msg, WPARAM wParam, LPARAM lParam)
                 suggestedRect->left, suggestedRect->top, suggestedRect->right - suggestedRect->left, suggestedRect->bottom - suggestedRect->top);
 #endif
 
-            if (data->videodata->dpi_scaling_enabled) {
-                /* Update the cached DPI value for this window */
-                data->scaling_dpi = newDPI;
-
-                /* Send a SDL_WINDOWEVENT_SIZE_CHANGED saying that the client size (in dpi-scaled points) is unchanged. 
-                   Renderers need to get this to know that the framebuffer size changed. */
-                SDL_SendWindowEvent(data->window, SDL_WINDOWEVENT_SIZE_CHANGED, data->window->w, data->window->h);
-            }
-
             if (data->expected_resize) {
                 /* This DPI change is coming from an explicit SetWindowPos call within SDL.
                    Assume all call sites are calculating the DPI-aware frame correctly, so
@@ -1603,6 +1594,16 @@ WIN_WindowProc(HWND hwnd, UINT msg, WPARAM wParam, LPARAM lParam)
                 h,
                 SWP_NOZORDER | SWP_NOACTIVATE);
             data->expected_resize = SDL_FALSE;
+
+            if (data->videodata->dpi_scaling_enabled) {
+                /* Update the cached DPI value for this window */
+                data->scaling_dpi = newDPI;
+
+                /* Send a SDL_WINDOWEVENT_SIZE_CHANGED saying that the client size (in dpi-scaled points) is unchanged.
+                   Renderers need to get this to know that the framebuffer size changed. */
+                SDL_SendWindowEvent(data->window, SDL_WINDOWEVENT_SIZE_CHANGED, data->window->w, data->window->h);
+            }
+
             return 0;
         }
         break;