Strip the backslash to avoid GCC8.4.0 RosBE2.2.1 warning:
[104/108] Building RC object dll/win32.../CMakeFiles/cryptui.dir/cryptui.rc.obj
C:/ros/reactos/dll/win32/cryptui/lang/cryptui_En.rc:383: unrecognized escape sequence
The glitch was introduced yesterday
by 0.4.15-dev-3739-g ff9301e9db