gradle: don't exclude unix files on macos

Somehow they are needed. No clue. Fixes GH-43

Author: Bixilon

build.gradle.kts

@@ -607,13 +607,15 @@ val fatJar = tasks.register("fatJar", fun Jar.() {
         exclude("com/sun/jna/freebsd*/**")
         exclude("com/sun/jna/openbsd*/**")
         exclude("com/sun/jna/dragonflybsd*/**")
-        exclude("com/sun/jna/platform/unix/**")
         exclude("com/sun/jna/platform/bsd/**")
         exclude("oshi/software/os/unix/**")
         exclude("oshi/hardware/platform/unix/**")
         exclude("oshi/driver/unix/**")
         exclude("org/lwjgl/system/freebsd/**")
     }
+    if (PlatformInfo.OS != OSTypes.MAC && PlatformInfo.OS != OSTypes.UNIX) {
+        exclude("com/sun/jna/platform/unix/**")
+    }
     if (PlatformInfo.OS != OSTypes.LINUX) {
         exclude("com/sun/jna/platform/linux/**")
         exclude("com/sun/jna/linux*/**")