For simple tables, do not use table dhandle after it is released

The change https://github.com/wiredtiger/wiredtiger/commit/982121f68b336eb58edfbae26300ef46935277b8, AKA WT-3555 appears to have an error. __wt_schema_release_table is called before table->face.name is used. This is not a simple code ordering problem, as storage for cursor->uri must persist for the lifetime of the cursor. The WT-3555 changes are related to some small performance enhancements for cursor opens.

It's possible this is the problem seen in HELP-5263.