Ports: Don't unset EDITOR

Author: https://github.com/timschumi
Commit: https://github.com/SerenityOS/serenity/commit/92fe7eb341
Pull-request: https://github.com/SerenityOS/serenity/pull/14136

Ports/.strip_env.sh

@@ -5,6 +5,7 @@ exec env -i SERENITY_STRIPPED_ENV=1 \
     USER="${USER}" \
     TERM="${TERM}" \
     PATH="${PATH}" \
+    EDITOR="${EDITOR:-}" \
     MAKEJOBS="${MAKEJOBS:-}" \
     IN_SERENITY_PORT_DEV="${IN_SERENITY_PORT_DEV:-}" \
     SERENITY_ARCH="${SERENITY_ARCH:-}" \