Fix arm64 library names on mac

Author: tobil4sk

toolchain/finish-setup.xml

@@ -60,7 +60,7 @@
 <set name="LIBEXTRA" value="-x86" if="HXCPP_X86" />
 <set name="LIBEXTRA" value="-x86_64" if="HXCPP_X86_64" />
 <set name="LIBEXTRA" value="-v7" if="HXCPP_ARMV7" unless="LIBEXTRA||linux" />
-<set name="LIBEXTRA" value="-64" if="HXCPP_ARM64" unless="LIBEXTRA||linux||isMsvc" />
+<set name="LIBEXTRA" value="-64" if="HXCPP_ARM64" unless="LIBEXTRA||linux||isMsvc||macos" />
 <set name="LIBEXTRA" value="-x86" if="tizen"/>
 <set name="LIBEXTRA" value="" if="tizen" unless="simulator" />
 <set name="LIBEXT" value=".a" />