adjust CMakeLists properly

Author: glessard

CMakeLists.txt

@@ -118,7 +118,8 @@ list(APPEND _SwiftFoundation_availability_names
 list(APPEND _SwiftFoundation_availability_releases
     ${_SwiftFoundation_BaseAvailability}
     ${_SwiftFoundation_BaseAvailability}
-    ${_SwiftFoundation_BaseAvailability})
+    ${_SwiftFoundation_BaseAvailability}
+    ${_SwiftFoundation_FutureAvailability})
 
 foreach(version ${_SwiftFoundation_versions})
     foreach(name release IN ZIP_LISTS _SwiftFoundation_availability_names _SwiftFoundation_availability_releases)