There is no column peername on peers table

This fixes foreign key reference to peers table.

sydent/db/peers.sql

@@ -17,5 +17,5 @@ limitations under the License.
 CREATE TABLE IF NOT EXISTS peers (id integer primary key, name varchar(255) not null, port integer default null, lastSentVersion integer, lastPokeSucceededAt integer, active integer not null default 0);
 CREATE UNIQUE INDEX IF NOT EXISTS name on peers(name);
 
-CREATE TABLE IF NOT EXISTS peer_pubkeys (id integer primary key, peername varchar(255) not null, alg varchar(16) not null, key text not null, foreign key (peername) references peers (peername));
+CREATE TABLE IF NOT EXISTS peer_pubkeys (id integer primary key, peername varchar(255) not null, alg varchar(16) not null, key text not null, foreign key (peername) references peers (name));
 CREATE UNIQUE INDEX IF NOT EXISTS peername_alg on peer_pubkeys(peername, alg);