Whitespace not ignored when attempting to get method caller

[JDGrimes]

Given code like this:

    wordpoints_component( 'points' )
        ->get_sub_app( 'logs' )
        ->get_sub_app( 'views' );

These errors get reported:

/components/points/includes/logs.php#381 wordpoints_component( 1 ): Non gettexted string 'points'
/components/points/includes/logs.php#382 
        ->get_sub_app( 1 ): Non gettexted string 'logs'
/components/points/includes/logs.php#383 
        ->get_sub_app( 1 ): Non gettexted string 'views'

Note how instead of (unknown)->get_sub_app( 1 ), which we would get if this code was all in one line, the validator actually latches onto the whitespace. I think this is a simple case of us not discarding whitespace when we should be.

That is, given this code:

    wordpoints_component( 'points' )->get_sub_app( 'logs' )->get_sub_app( 'views' );

We'd get these errors:

/components/points/includes/logs.php#381 wordpoints_component( 1 ): Non gettexted string 'points'
/components/points/includes/logs.php#381 (unknown)->get_sub_app( 1 ): Non gettexted string 'logs'
/components/points/includes/logs.php#381 (unknown)->get_sub_app( 1 ): Non gettexted string 'views'

And that's what we would expect to get here.