Trivial patch, reproduced below:

---
 src/fontfile/catalogue.c |    2 ++
 1 files changed, 2 insertions(+), 0 deletions(-)

diff --git a/src/fontfile/catalogue.c b/src/fontfile/catalogue.c
index 812b050..2a65e86 100644
--- a/src/fontfile/catalogue.c
+++ b/src/fontfile/catalogue.c
@@ -206,6 +206,8 @@ CatalogueRescan (FontPathElementPtr fpe)
        }
     }

+    closedir(dir);
+
     qsort(cat->fpeList,
          cat->fpeCount, sizeof cat->fpeList[0], ComparePriority);