Fix Windows hosts perfdata parse

[phsmith]

Where I work, we monitor several windows hosts and we need that the perfdata information to make graphics dashboards on Grafana.
So I've made a little fix on the code to fix the problem with perfdatas with space on name that coming from check_wmi_plus.
The only codes that I've made are on lines 367 and 368.

[phsmith]

I've made new changes to better parse windows perfdata.
Now it's parsing perfdatas from NSClient++, check_wmi_plus, and others correctly.