replaced a ton of free or strdup calls for zap_safe_free and zap_strdup

git-svn-id: http://svn.openzap.org/svn/openzap/branches/sangoma_boost@864 a93c3328-9c30-0410-af19-c9cd2b2d52af

libs/freetdm/src/hashtable_itr.c

@@ -138,7 +138,7 @@ hashtable_iterator_remove(struct hashtable_itr *itr)
     remember_parent = itr->parent;
     ret = hashtable_iterator_advance(itr);
     if (itr->parent == remember_e) { itr->parent = remember_parent; }
-    free(remember_e);
+    zap_safe_free(remember_e);
     return ret;
 }