Fix conditional check in build_packages_info.yml to ensure GitHub functions are only echoed when defined

Author: OllyButters

.github/workflows/build_packages_info.yml

@@ -69,6 +69,7 @@ jobs:
               echo "GitHub functions: $gh_functions"
               echo $name >> functions.txt
               echo "$gh_functions" >> functions.txt
+            fi
 
             # Use the GitHub API to pull in info about the repoisitory
             echo "\nGitHub API information"