kernel32/tests: Add test for FormatMessage with HRESULT.

dlls/kernel32/tests/format_msg.c

@@ -1552,6 +1552,12 @@ static void test_message_from_hmodule(void)
                          MAKELANGID(LANG_NEUTRAL, SUBLANG_NEUTRAL), out, sizeof(out)/sizeof(CHAR), NULL);
     ok(ret != 0, "FormatMessageA returned 0\n");
 
+    /* Test HRESULT. It's not documented but in practice _com_error::ErrorMessage relies on this. */
+    ret = FormatMessageA(FORMAT_MESSAGE_FROM_SYSTEM | FORMAT_MESSAGE_FROM_HMODULE, h, 0x80070005 /* E_ACCESSDENIED */,
+                         MAKELANGID(LANG_NEUTRAL, SUBLANG_NEUTRAL), out, sizeof(out)/sizeof(CHAR), NULL);
+    todo_wine
+    ok(ret != 0, "FormatMessageA returned 0\n");
+
     /* Test a message string with an insertion without passing any variadic arguments. */
     ret = FormatMessageA(FORMAT_MESSAGE_FROM_SYSTEM | FORMAT_MESSAGE_FROM_HMODULE, h, 193 /* ERROR_BAD_EXE_FORMAT */,
                          MAKELANGID(LANG_NEUTRAL, SUBLANG_NEUTRAL), out, sizeof(out)/sizeof(CHAR), NULL);