build: pin avisynth headers for arm64

Author: msg7086

CMakeLists.txt

@@ -8,7 +8,8 @@ project(DelogoHD CXX)
 
 option(DELOGOHD_BUILD_TEST_TOOLS "Build DelogoHD baseline test tools" ON)
 option(DELOGOHD_COPY_RELEASE "Copy the built plugin to the legacy Release_<version> directory" OFF)
-set(DELOGOHD_AVISYNTHPLUS_TAG "v3.7.5" CACHE STRING "AviSynthPlus tag used when pkg-config cannot find AviSynth headers")
+# Pin past v3.7.5 so fallback headers allow Visual Studio ARM64 builds.
+set(DELOGOHD_AVISYNTHPLUS_TAG "751ce2021cab1c8405d04825ac2f7e8ac93e8fa0" CACHE STRING "AviSynthPlus tag used when pkg-config cannot find AviSynth headers")
 set(DELOGOHD_VAPOURSYNTH_TAG "R72" CACHE STRING "VapourSynth tag used when pkg-config cannot find VapourSynth headers")
 
 set(CMAKE_CXX_STANDARD 23)