credui: Add a stub for CredUIInitControls.

dlls/credui/credui.spec

@@ -2,7 +2,7 @@
 @ stub CredUICmdLinePromptForCredentialsW
 @ stub CredUIConfirmCredentialsA
 @ stdcall CredUIConfirmCredentialsW(wstr long)
-@ stub CredUIInitControls
+@ stdcall CredUIInitControls()
 @ stub CredUIParseUserNameA
 @ stdcall CredUIParseUserNameW(wstr ptr long ptr long)
 @ stub CredUIPromptForCredentialsA

dlls/credui/credui_main.c

@@ -800,3 +800,12 @@ DWORD WINAPI CredUIReadSSOCredW(PCWSTR pszRealm, PWSTR *ppszUsername)
         *ppszUsername = NULL;
     return ERROR_NOT_FOUND;
 }
+
+/******************************************************************************
+ * CredUIInitControls [CREDUI.@]
+ */
+BOOL WINAPI CredUIInitControls(void)
+{
+    FIXME("() stub\n");
+    return TRUE;
+}