Fix array to string conversion notice
Fix array to string conversion notice

As per Sourceforge #131. Thanks to Spearhead.

andrewnicols/ADOdb,ipso/ADOdb,andrewnicols/ADOdb,azghanvi/ADOdb,paulproteus/ADOdb,azghanvi/ADOdb,paulproteus/ADOdb,ipso/ADOdb,pyscht/ADOdb,pyscht/ADOdb