Backport: Fix numerous memory leaks: some were almost impossible to trigger, and some almost inevitable.

svn:r16781

src/or/connection_edge.c

@@ -696,6 +696,8 @@ clear_trackexithost_mappings(const char *exitname)
       MAP_DEL_CURRENT(address);
     }
   } STRMAP_FOREACH_END;
+
+  tor_free(suffix);
 }
 
 /** Remove all entries from the addressmap that were set via the

src/or/directory.c

@@ -2806,7 +2806,7 @@ directory_handle_command_post(dir_connection_t *conn, const char *headers,
      * receive anything. */
     write_http_status_line(conn, 400, "Nonauthoritative directory does not "
                            "accept posted server descriptors");
-    return 0;
+    goto done;
   }
 
   if (authdir_mode_handles_descs(options, -1) &&

src/or/rendcommon.c

@@ -884,6 +884,7 @@ rend_cache_store(const char *desc, size_t desc_len, int published)
   if (!published && strmap_get_lc(rend_cache, key)) {
     log_info(LD_REND, "We already have a v2 descriptor for service %s.",
              safe_str(query));
+    rend_service_descriptor_free(parsed);
     return -1;
   }
   /* report novel publication to statistics */