Attempt at fixing a MS SQL bug.

That's another blind fix, but it looks like this should be doing it.
Hopefully. Chances to break pgloader even more are quite slim, so let's try
it in the master branch.

Fixes #1069.

src/sources/mssql/mssql-schema.lisp

@@ -64,6 +64,7 @@
                            table-type-name
                            incl-where   ; do we print the clause?
                            incl-where
+                           excl-where   ; do we print the clause?
                            excl-where))
      :do (let* ((schema     (maybe-add-schema catalog schema-name))
                 (table      (maybe-add-table schema table-name))