try add space

Author: mvorisek

.github/scripts/windows/build_task.bat

@@ -29,6 +29,7 @@ if /i "%APPVEYOR%" equ "True" (
     rename C:\msys64 C:\trash-msys64
     if %errorlevel% neq 0 exit /b 3
 )
+
 rmdir /s /q c:\OpenSSL-Win32 >NUL 2>NUL
 if %errorlevel% neq 0 exit /b 3
 rmdir /s /q c:\OpenSSL-Win64 >NUL 2>NUL