add missing test to avoid uninitialised value when a page with metadata is removed

[ikiwiki.git] / IkiWiki / Plugin / aggregate.pm

diff --git a/IkiWiki/Plugin/aggregate.pm b/IkiWiki/Plugin/aggregate.pm
index 71368e254a960cf2545efe79ffe4b91601b34649..c3cbbae0553464b9c8d20fab97333c788a7290eb 100644 (file)
--- a/IkiWiki/Plugin/aggregate.pm
+++ b/IkiWiki/Plugin/aggregate.pm
@@ -66,7 +66,8 @@ sub needsbuild (@) { #{{{
        loadstate(); # if not already loaded
 
        foreach my $feed (values %feeds) {
-               if (grep { $_ eq $pagesources{$feed->{sourcepage}} } @$needsbuild) {
+               if (exists $pagesources{$page} && 
+                   grep { $_ eq $pagesources{$feed->{sourcepage}} } @$needsbuild) {
                        # Mark all feeds originating on this page as removable;
                        # preprocess will unmark those that still exist.
                        remove_feeds($feed->{sourcepage});