ui-shared: add homepage to tabs

Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com>
diff --git a/shared.c b/shared.c
index a078a27..a63633b 100644
--- a/shared.c
+++ b/shared.c
@@ -54,6 +54,7 @@
 	ret->path = NULL;
 	ret->desc = cgit_default_repo_desc;
 	ret->owner = NULL;
+	ret->homepage = NULL;
 	ret->section = ctx.cfg.section;
 	ret->snapshots = ctx.cfg.snapshots;
 	ret->enable_commit_graph = ctx.cfg.enable_commit_graph;