userenv: Add a stub for UnloadUserProfile.
diff --git a/include/userenv.h b/include/userenv.h
index f2f2176..20d7fa1 100644
--- a/include/userenv.h
+++ b/include/userenv.h
@@ -45,6 +45,7 @@
 BOOL WINAPI LoadUserProfileW(HANDLE,LPPROFILEINFOW);
 #define     LoadUserProfile WINELIB_NAME_AW(LoadUserProfile)
 BOOL WINAPI RegisterGPNotification(HANDLE,BOOL);
+BOOL WINAPI UnloadUserProfile(HANDLE,HANDLE);
 BOOL WINAPI UnregisterGPNotification(HANDLE);
 
 #ifdef __cplusplus