[subset] Add missing destroy of subsetting result in subset fuzzer.
diff --git a/test/fuzzing/hb-subset-fuzzer.cc b/test/fuzzing/hb-subset-fuzzer.cc
index 3081a57..dfa8361 100644
--- a/test/fuzzing/hb-subset-fuzzer.cc
+++ b/test/fuzzing/hb-subset-fuzzer.cc
@@ -28,6 +28,7 @@
 
   hb_face_t *result = hb_subset (face, profile, input);
 
+  hb_face_destroy (result);
   hb_subset_input_destroy (input);
   hb_subset_profile_destroy (profile);
   hb_face_destroy (face);