expr: Fix memory leak in expr_macros_destroy().

Signed-off-by: Ryan Moats <rmoats@us.ibm.com>
[blp@ovn.org split this bug fix out of a larger patch]
Signed-off-by: Ben Pfaff <blp@ovn.org>

1 files changed, 1 insertions, 0 deletions

diff --git a/ovn/lib/expr.c b/ovn/lib/expr.c
index e0a14ecdd..4ae6b0b6b 100644
--- a/ovn/lib/expr.c
+++ b/ovn/lib/expr.c
@@ -964,6 +964,7 @@ expr_macros_destroy(struct shash *macros)
 
         shash_delete(macros, node);
         expr_constant_set_destroy(cs);
+        free(cs);
     }
 }