go to public timeline on logout and handle missing user more gracefully

darcs-hash:20080517195449-84dde-d08f3cad4fb79cdf81ef40f79aa30a29c9ddd9a7.gz

actions/logout.php

@@ -26,7 +26,7 @@ class LogoutAction extends Action {
 			common_user_error(_t('Not logged in.'));
 		} else {
 			common_set_user(NULL);
-			common_redirect(common_local_url('main'));
+			common_redirect(common_local_url('public'));
 		}
 	}
 }

actions/showstream.php

@@ -35,12 +35,14 @@ class ShowstreamAction extends StreamAction {
 
 		if (!$user) {
 			$this->no_such_user();
+			return;
 		}
 
 		$profile = $user->getProfile();
 
 		if (!$profile) {
 			common_server_error(_t('User record exists without profile.'));
+			return;			
 		}
 
 		# Looks like we're good; show the header