cerbero: Fix logic for finding plugin DLLs
f[3:] is wrong because f is lib/gstreamer-1.0/libfoo.dll
Because of this, plugins built with MSVC weren't getting included in the binary release at all.
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f[3:] is wrong because f is lib/gstreamer-1.0/libfoo.dll
Because of this, plugins built with MSVC weren't getting included in the binary release at all.