AudioPane: Fix WASAPI default device combo selection

Set the default value of `Config::MAIN_WASAPI_DEVICE` to `default`
instead of `Default`. This fixes an issue where `AudioPane`'s `Output
Device` combo would be blank if `WASAPI` was selected and the user had
never changed the value of `Output Device`.

We don't have to worry about backward compatibility with users who have
`Default` in their config because config values aren't written unless
they've been changed at some point from the default, and the combo has
always saved `default` instead of `Default`.

Audio still worked during emulation in this situation because the
fallback for an unrecognized device name is the default device.

To help prevent similar situations in the future references to
`MAIN_WASAPI_DEVICE`'s default value now call `GetDefaultValue` instead
of hardcoding the expected default, or use the new helper function
`Config::IsDefaultValue`.

1 files changed, 1 insertions, 1 deletions

diff --git a/Source/Core/AudioCommon/WASAPIStream.cpp b/Source/Core/AudioCommon/WASAPIStream.cpp
index afd5531ae8..9cbf915e82 100644
--- a/Source/Core/AudioCommon/WASAPIStream.cpp
+++ b/Source/Core/AudioCommon/WASAPIStream.cpp
@@ -176,7 +176,7 @@ bool WASAPIStream::SetRunning(bool running)
 
     HRESULT result;
 
-    if (Config::Get(Config::MAIN_WASAPI_DEVICE) == "default")
+    if (Config::IsDefaultValue(Config::MAIN_WASAPI_DEVICE))
     {
       result = m_enumerator->GetDefaultAudioEndpoint(eRender, eConsole, &device);
     }