win32/NMake: Fix introspection builds
Hi,
Carrying on from MR !270 (merged)... from the commit message...
There is an extraneous set of CFlags that was passed into the g-ir-scanner command line, which was causing the build of GjsPrivate-1.0.gir to fail. Plus, during the previous update to this file, the g-ir-compiler line was updated incorrectly, so fix that as well.
This will fix introspection builds on NMake/Visual Studio builds of GJS.
With blessings, thank you!
Edited by Chun-wei Fan