Fix error in if condition

buildbot/nightly2017.sh

@@ -21,6 +21,6 @@ case "$TARGET_TRIPLE" in
 	;;
 esac
 
-DO_RELOCATE=1
+SKIP_RELOCATE=1
 
 . runspec.sh

buildbot/runspec.sh

@@ -9,7 +9,7 @@ COMPLETEDEST="${DESTDIR}/$(basename "${SOURCE}")"
 cd "${COMPLETEDEST}"
 # Need to call "relocate" if the spec stuff ended up in a different directory
 # than the original installation
-if [ -n "$DO_RELOCATE" ]; then
+if [ -z "$SKIP_RELOCATE" ]; then
     (set +eu ; . shrc && bin/relocate)
 else
     (set +eu; .shrc)