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 gst indent #77287

00:00:33

passed manifest #77286

00:00:36

 
  Build
passed build fedora x86_64 #77288

00:03:28

 
  Test
passed check fedora #77289

00:17:19

 
  Full Builds
passed build android arm64 api28 #77290

00:02:52

passed build cerbero cross win32 #77292

00:16:52

passed build cerbero cross win64 #77293

00:15:12

passed build cerbero fedora x86_64 #77291

00:15:07