added snapshot filename to the link

 - changed cgit_pageurl into cgit_fileurl with the filename parameter
 - rewritten cgit_pageurl as a wrapper around cgit_fileurl

Signed-off-by: Michael Krelin <hacker@klever.net>
diff --git a/ui-snapshot.c b/ui-snapshot.c
index 84bf8f7..7076b50 100644
--- a/ui-snapshot.c
+++ b/ui-snapshot.c
@@ -109,7 +109,7 @@
 		const struct snapshot_archive_t* sat = &snapshot_archives[f];
 		filename = fmt("%s-%s%s",repo,hex,sat->suffix);
 		htmlf("<a href='%s'>%s</a><br/>",
-			cgit_pageurl(repo,"snapshot",
+			cgit_fileurl(repo,"snapshot",filename,
 			    fmt("id=%s&amp;name=%s",hex,filename)), filename);
 	}
 }