Make sure sqlite3 driver closes open connections on disconnect (closes #7105)

git-svn-id: http://svn-commit.rubyonrails.org/rails/trunk@6012 5ecf4fe2-1ee6-0310-87b1-e25e094e27de

activerecord/CHANGELOG

 *SVN*
 
+* Make sure sqlite3 driver closes open connections on disconnect [Rob Rasmussen]
+
 * [DOC] clear up some ambiguity with the way has_and_belongs_to_many creates the default join table name.  #7072 [jeremymcanally]
 
 * change_column accepts :default => nil. Skip column options for primary keys.  #6956, #7048 [dcmanges, Jeremy Kemper]

activerecord/lib/active_record/connection_adapters/sqlite_adapter.rb

@@ -105,6 +105,11 @@ def supports_migrations? #:nodoc:
       def requires_reloading?
         true
       end
+ 
+      def disconnect!
+        super
+        @connection.close rescue nil
+      end
 
       def supports_count_distinct? #:nodoc:
         sqlite_version >= '3.2.6'