SDL: windows: If a display's friendly name is blank, try the generic name.

SDL Commits
1 
From c6c0a8394e459ed511540cdb2594b2858f6f6f50 Mon Sep 17 00:00:00 2001
From: "Ryan C. Gordon" <[EMAIL REDACTED]>
Date: Wed, 10 Aug 2022 09:54:49 -0400
Subject: [PATCH] windows: If a display's friendly name is blank, try the
 generic name.

Fixes #6031.
---
 src/video/windows/SDL_windowsmodes.c | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/src/video/windows/SDL_windowsmodes.c b/src/video/windows/SDL_windowsmodes.c
index 098b253bbc0..1bba3ecd436 100644
--- a/src/video/windows/SDL_windowsmodes.c
+++ b/src/video/windows/SDL_windowsmodes.c
@@ -271,6 +271,12 @@ WIN_GetDisplayNameVista(const WCHAR *deviceName)
             rc = pDisplayConfigGetDeviceInfo(&targetName.header);
             if (rc == ERROR_SUCCESS) {
                 retval = WIN_StringToUTF8W(targetName.monitorFriendlyDeviceName);
+                /* if we got an empty string, treat it as failure so we'll fallback
+                   to getting the generic name. */
+                if (retval && (*retval == '\0')) {
+                    SDL_free(retval);
+                    retval = NULL;
+                }
             }
             break;
         }