(ported from github)

I have some code that used mongoc_cursor_more() to detect end of data in version 0.9.0 and appeared to work correctly.

It is basically structured like:

while(mongoc_cursor_more(c))
{
   if(mongoc_cursor_next(c, &bdoc))
   {
      // do stuff
   }
   else
   {
      // handle presumed error
   }
}

However, I am upgrading to 0.98.0 and now it appears that mongoc_cursor_more() always returns true, even when mongoc_cursor_next() indicates that the cursor is exhausted. I have to examine the cursor error and find it set to 0 to detect end of data. Is this a bug or am I missing something?