- Fix DirectPlayEnumerateA exit code.

- Add default registry entry for DirectPlay Service Providers.

dlls/dplayx/dplay.c

@@ -5211,7 +5211,7 @@ HRESULT WINAPI DirectPlayEnumerateA( LPDPENUMDPCALLBACKA lpEnumCallback,
   {
     /* Hmmm. Does this mean that there are no service providers? */
     ERR(": no service providers?\n");
-    return DP_OK;
+    return DPERR_NOSERVICEPROVIDER;
   }
 
   /* Traverse all the service providers we have available */

winedefault.reg

@@ -957,6 +957,9 @@
 @="dplayx.dll"
 "ThreadingModel"="Both"
 
+[HKEY_LOCAL_MACHINE\Software\Microsoft\DirectPlay\Service Providers] 
+@=""
+
 #
 # Entries used by Internet Explorer installer
 #