Add --working-dir=. to index-files call

Author: hvitved

tools/autobuild.sh

@@ -6,4 +6,5 @@ exec "${CODEQL_DIST}/codeql" database index-files \
     --include-extension=.rb \
     --size-limit=5m \
     --language=ruby \
+    --working-dir=.\
     "$CODEQL_EXTRACTOR_RUBY_WIP_DATABASE"