SDL: audio: another windows wasapi build fix.

SDL Commits
1 
From f7dc63bcc3e7af853934d4c96618616087a56412 Mon Sep 17 00:00:00 2001
From: Ozkan Sezer <[EMAIL REDACTED]>
Date: Wed, 18 Oct 2023 18:32:00 +0300
Subject: [PATCH] audio: another windows wasapi build fix.

---
 src/audio/wasapi/SDL_wasapi.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/audio/wasapi/SDL_wasapi.c b/src/audio/wasapi/SDL_wasapi.c
index 04295cceac1b..620c15fbe191 100644
--- a/src/audio/wasapi/SDL_wasapi.c
+++ b/src/audio/wasapi/SDL_wasapi.c
@@ -368,7 +368,7 @@ static int ActivateWasapiDevice(SDL_AudioDevice *device)
 {
     // this blocks because we're either being notified from a background thread or we're running during device open,
     //  both of which won't deadlock vs the device thread.
-    int rc;
+    int rc = -1;
     return ((WASAPI_ProxyToManagementThread(mgmtthrtask_ActivateDevice, device, &rc) < 0) || (rc < 0)) ? -1 : 0;
 }