alfresco.sh does not avoid root execution

The alfresco.sh script has a typo that causes the root execution prevention to fail. The "$2" should be "$1". Specifically, this section from the alfresco.sh script contains an error:

# Avoid root execution
if [ `id|sed -e s/uid=//g -e s/\(.*//g` -eq 0 ] && [ $2 != "stop" ]; then
    echo "Execution by root not allowed"
    exit 1
fi

This should be:

# Avoid root execution
if [ `id|sed -e s/uid=//g -e s/\(.*//g` -eq 0 ] && [ $1 != "stop" ]; then
    echo "Execution by root not allowed"
    exit 1
fi

[Steps to reproduce]
1. Install Alfresco 5.1 on Linux as a non-root user
2. Switch to the root user ("su")
3. As root, attempt to start Alfresco using the alfresco.sh script:

./alfresco.sh start

[Expected Behaviour]
The alfresco.sh script should prevent root execution:

[root@localhost alfresco-5.1.1.4]# ./alfresco.sh start
Execution by root not allowed

[Observed Behaviour]
The following message is displayed, then Alfresco starts as expected:

[root@localhost alfresco-5.1.1.4]# ./alfresco.sh start
./alfresco.sh: line 4: [: !=: unary operator expected