Tweak GetChildObjects routine

[ldarrambide]

Can get URL only of loaded pages. New Firefox versions don't load pages in invisible tabs at startup.

Yes I fully understand that. I just want the FirefoxGetTabs be able to skip the tab that contains no DOCUMENT property in iteration, so it does not
appears in list, and without generating any error. I don't have the use of empty webpage.

Code:

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rep
     get id of this pane, and find in ap
    fn.FromAcc(a); _s=fn.Attribute("id")
    for(i 0 ap.len) if(ap[i]=_s) break
    if(i=names.len) goto next2 ;;should never happen
     get DOCUMENT object and url
    Acc aa; a.Navigate("fi2" aa)
    if(&urls) urls[i]=aa.Value
    if(&docObjects) docObjects[i]=aa
    
     next2
    a.Navigate("n"); err break

ret r

In this, if document not present, then I have logically a "object not found" error, terminating the routine (as asked by the code, no problem here).
I'd like to continue iteration of through other tabs and discard the empty one.

Possible?