scm:diff doesn't work when using the 'endScmVersion' parameter

When using scm:diff with the parameters 'startScmVersion' and 'endScmVersion', both parameters get the value of 'startScmVersion'.

The 'endScmVersion' attribute of the mojo seems to be erroneously assigned to the 'startScmVersion' parameter.

Extract of the DiffMojo code :

...
/**
 * The version (revision number/branch name/tag name).
 *
 * @parameter expression="${startScmVersion}"
 */
private String endScmVersion;
...