meson: Fix building of MSDK plugin on Windows

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8 jobs for fix-msdk-windows in 52 minutes and 5 seconds (queued for 3 seconds)
Status Job ID Name Coverage
  Preparation
passed #77287
gst indent

00:00:33

passed #77286
manifest

00:00:36

 
  Build
passed #77288
build fedora x86_64

00:03:28

 
  Test
passed #77289
check fedora

00:17:19

 
  Full Builds
passed #77290
build android arm64 api28

00:02:52

passed #77292
build cerbero cross win32

00:16:52

passed #77293
build cerbero cross win64

00:15:12

passed #77291
build cerbero fedora x86_64

00:15:07