infinite loop in function aws() when AWS_REGION is not set

[vdesabou]

    if [ -z "$AWS_REGION" ]
    then
        AWS_REGION=$(aws configure get region | tr '\r' '\n')  ----> calling function 
        if [ "$AWS_REGION" == "" ]
        then
            logerror "ERROR: either the file $HOME/.aws/config is not present or environment variables AWS_REGION is not set!"
            exit 1
        fi
    fi

[vdesabou]

workaround is to set AWS_REGION env variable