fixup! Bob for Tim's latest apple and bite it off

Author: workingjubilee

src/ci/scripts/select-xcode.sh

@@ -11,7 +11,9 @@ if isMacOS; then
     if [[ $old_xcode =~ $SELECT_XCODE ]]; then
         echo "xcode-select.sh's brutal hack may not be necessary?"
         exit 1
-    elif [[ $SELECT_XCODE =~ "16" ]]
+    elif [[ $SELECT_XCODE =~ "16" ]]; then
+        echo "Using xcode 16? Please fix xcode-select.sh"
+        exit 1
     else
         sudo xcode-select -s "16.0.0"
         xcode_16_path="$(xcode-select --print-path)"