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@@ -59,14 +59,13 @@ typedef struct or_history_t {
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/** Map from hex OR identity digest to or_history_t. */
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static digestmap_t *history_map = NULL;
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-/** Return the or_history_t for the named OR, creating it if necessary.
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- */
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+/** Return the or_history_t for the named OR, creating it if necessary. */
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static or_history_t *
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get_or_history(const char* id)
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{
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or_history_t *hist;
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- if (!memcmp(id, "\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0", DIGEST_LEN))
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+ if (tor_mem_is_zero(id, DIGEST_LEN))
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return NULL;
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hist = digestmap_get(history_map, id);
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@@ -93,7 +92,7 @@ get_link_history(const char *from_id, const char *to_id)
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orhist = get_or_history(from_id);
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if (!orhist)
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return NULL;
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- if (!memcmp(to_id, "\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0", DIGEST_LEN))
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+ if (tor_mem_is_zero(to_id, DIGEST_LEN))
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return NULL;
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lhist = (link_history_t*) digestmap_get(orhist->link_history_map, to_id);
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if (!lhist) {
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