Fixed bug with USER_LOGIN (#78)

Author: jackton1

entrypoint.sh

@@ -50,6 +50,10 @@ BASE_REPO=$(echo "$pr_resp" | jq -r .base.repo.full_name)
 BASE_BRANCH=$(echo "$pr_resp" | jq -r .base.ref)
 
 USER_LOGIN=$(jq -r ".comment.user.login" "$GITHUB_EVENT_PATH")
+          
+if [[ "$USER_LOGIN" == "null" ]]; then
+	USER_LOGIN=$(jq -r ".pull_request.user.login" "$GITHUB_EVENT_PATH")
+fi
 
 user_resp=$(curl -X GET -s -H "${AUTH_HEADER}" -H "${API_HEADER}" \
 	"${URI}/users/${USER_LOGIN}")