Code review comment for lp:~widelands-dev/widelands/appveyor-fix

Good idea.
Now I know what is wrong

line 25 must read
- cmd: "IF \"%PLATFORM%\" == \"x86\" (bash --login -c \"pacman --noconfirm -S mingw-w64-%MINGWSUFFIX%-glew\") ELSE (bash --login -c \"pacman --noconfirm -S mingw-w64-%MINGWSUFFIX%-glbinding\")"

there were some superfluous quotation marks.

so if anybody want to change this and upload it during the day he is very welcome.
Otherwise I'll do it tonight