SDL: video/dummy: Don't zero out the fake display mode before adding it.

SDL Commits
1 
From 839387ed0a27bdaf6b9ea0ba7cea16950762078d Mon Sep 17 00:00:00 2001
From: "Ryan C. Gordon" <[EMAIL REDACTED]>
Date: Thu, 17 Jun 2021 22:09:13 -0400
Subject: [PATCH] video/dummy: Don't zero out the fake display mode before
 adding it.

The SDL_zero call was in the wrong place as a historical accident, I think.
---
 src/video/dummy/SDL_nullvideo.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/video/dummy/SDL_nullvideo.c b/src/video/dummy/SDL_nullvideo.c
index d53c64436..1ab0b8c00 100644
--- a/src/video/dummy/SDL_nullvideo.c
+++ b/src/video/dummy/SDL_nullvideo.c
@@ -116,6 +116,7 @@ DUMMY_VideoInit(_THIS)
     SDL_DisplayMode mode;
 
     /* Use a fake 32-bpp desktop mode */
+    SDL_zero(mode);
     mode.format = SDL_PIXELFORMAT_RGB888;
     mode.w = 1024;
     mode.h = 768;
@@ -125,7 +126,6 @@ DUMMY_VideoInit(_THIS)
         return -1;
     }
 
-    SDL_zero(mode);
     SDL_AddDisplayMode(&_this->displays[0], &mode);
 
     /* We're done! */