Davide Beatrici : winepulse: Fix crash when requesting exclusive mode with an unsupported format.

[Alexandre Julliard]

Module: wine
Branch: master
Commit: 31e5218286f0686304b8aaa62b626dcfd9b202c6
URL:    https://gitlab.winehq.org/wine/wine/-/commit/31e5218286f0686304b8aaa62b626dc...

Author: Davide Beatrici <git(a)davidebeatrici.dev>
Date:   Mon Aug 21 13:11:46 2023 +0200

winepulse: Fix crash when requesting exclusive mode with an unsupported format.

Wine-Bug: https://bugs.winehq.org/show_bug.cgi?id=55362

---

 dlls/winepulse.drv/pulse.c | 11 ++++++++---
 1 file changed, 8 insertions(+), 3 deletions(-)

diff --git a/dlls/winepulse.drv/pulse.c b/dlls/winepulse.drv/pulse.c
index 0e587033a6d..370c361b02f 100644
--- a/dlls/winepulse.drv/pulse.c
+++ b/dlls/winepulse.drv/pulse.c
@@ -2221,9 +2221,14 @@ static NTSTATUS pulse_is_format_supported(void *args)
         break;
     }
 
-    /* This driver does not support exclusive mode. */
-    if (exclusive && params->result == S_OK)
-        params->result = params->flow == eCapture ? AUDCLNT_E_UNSUPPORTED_FORMAT : AUDCLNT_E_EXCLUSIVE_MODE_NOT_ALLOWED;
+    if (exclusive) { /* This driver does not support exclusive mode. */
+        if (params->result == S_OK)
+            params->result = params->flow == eCapture ?
+                                             AUDCLNT_E_UNSUPPORTED_FORMAT :
+                                             AUDCLNT_E_EXCLUSIVE_MODE_NOT_ALLOWED;
+        else if (params->result == S_FALSE)
+            params->result = AUDCLNT_E_UNSUPPORTED_FORMAT;
+    }
 
     return STATUS_SUCCESS;
 }