The gofrontend would crash when trying to find the initialization
    order of a variable list where one of the listed variables was an
    invalid redefinition of another in a call statement.  This patch
    fixes initialization from call statements to consider invalid
    redefinitions before recording dependency information.
    
    Fixes golang/go#11543.
    
    Reviewed-on: https://go-review.googlesource.com/13895

From-SVN: r227276