libpq: Message style improvements

src/interfaces/libpq/fe-auth.c

@@ -1218,7 +1218,8 @@ PQencryptPasswordConn(PGconn *conn, const char *passwd, const char *user,
 	else
 	{
 		printfPQExpBuffer(&conn->errorMessage,
-				   libpq_gettext("unknown password encryption algorithm\n"));
+				   libpq_gettext("unrecognized password encryption algorithm \"%s\"\n"),
+						  algorithm);
 		return NULL;
 	}
 

src/interfaces/libpq/fe-connect.c

@@ -3099,7 +3099,7 @@ keep_going:						/* We will come back to here until there is
 				restoreErrorMessage(conn, &savedMessage);
 				appendPQExpBuffer(&conn->errorMessage,
 				  libpq_gettext("test \"SHOW transaction_read_only\" failed "
-								" on \"%s:%s\"\n"),
+								"on server \"%s:%s\"\n"),
 								  conn->connhost[conn->whichhost].host,
 								  conn->connhost[conn->whichhost].port);
 				conn->status = CONNECTION_OK;