winecoreaudio: Export get_device_name_from_guid().

dlls/winecoreaudio.drv/mmdevdrv.c

@@ -243,7 +243,7 @@ end:
     return params.result;
 }
 
-static BOOL get_device_name_from_guid(const GUID *guid, char **name, EDataFlow *flow)
+BOOL WINAPI get_device_name_from_guid(const GUID *guid, char **name, EDataFlow *flow)
 {
     HKEY devices_key;
     UINT i = 0;

dlls/winecoreaudio.drv/winecoreaudio.drv.spec

@@ -4,6 +4,7 @@
 @ stdcall -private modMessage(long long long long long) CoreAudio_modMessage
 
 # MMDevAPI driver functions
+@ stdcall -private get_device_name_from_guid(ptr ptr ptr) get_device_name_from_guid
 @ stdcall -private GetEndpointIDs(long ptr ptr ptr ptr) AUDDRV_GetEndpointIDs
 @ stdcall -private GetAudioEndpoint(ptr ptr ptr) AUDDRV_GetAudioEndpoint
 @ stdcall -private GetAudioSessionWrapper(ptr ptr ptr) AUDDRV_GetAudioSessionWrapper