[PATCH] cex: fix leaks

* src/state-item.c: Various functions were using heap allocated locals and not freeing them

Apple clang doesn't support leak sanitizer, so if this doesn't fix everything I'll bite the bullet and install a newer llvm. 

Also, I didn't touch the leak in complain_init_color. It looks like errstream is getting leaked, which doesn't make sense since it's freed in complain_free.
---
 src/state-item.c | 10 ++++++++--
 1 file changed, 8 insertions(+), 2 deletions(-)

diff --git a/src/state-item.c b/src/state-item.c
index 82496956..4a09e035 100644
--- a/src/state-item.c
+++ b/src/state-item.c
@@ -73,6 +73,7 @@ hash_pair_lookup (Hash_table *tab, int key)
   hash_pair *hp = (hash_pair *) hash_lookup (tab, l);
   if (!hp)
     return NULL;
+  free (l);
   return hp->l;
 }
 
@@ -174,6 +175,7 @@ init_state_items (void)
 
     }
   state_item_map[nstates] = nstate_items;
+  bitsetv_free (production_items);
 }
 
 static size_t
@@ -193,7 +195,9 @@ state_sym_lookup (symbol_number sym, Hash_table *h)
 {
   state *s = xmalloc (sizeof (state));
   s->accessing_symbol = sym;
-  return hash_lookup (h, s);
+  state *res = hash_lookup (h, s);
+  free (s);
+  return res;
 }
 
 static void
@@ -234,6 +238,7 @@ init_trans (void)
                 }
             }
         }
+      free (transition_set);
     }
 }
 
@@ -306,7 +311,7 @@ init_prods (void)
                 bitset_set (si_revs[prod], j);
             }
         }
-
+      free (closure_map);
     }
 }
 
@@ -345,6 +350,7 @@ gen_lookaheads (void)
                 gl_list_add_first (queue, &state_items[sin]);
             }
         }
+      gl_list_free (queue);
     }
 }
 
-- 
2.20.1 (Apple Git-117)