iwlwifi: dbg-tlv: fix old length in is_trig_data_contained()

There's a bug in the lengths - the 'old length' needs to be calculated
using the 'old' pointer, of course, likely a copy/paste mistake. Fix
this.
Reported-by: NDaniel Gabay <daniel.gabay@intel.com>
Signed-off-by: NJohannes Berg <johannes.berg@intel.com>
Fixes: cf29c5b6 ("iwlwifi: dbg_ini: implement time point handling")
Signed-off-by: NLuca Coelho <luciano.coelho@intel.com>
Link: https://lore.kernel.org/r/iwlwifi.20201209231352.c0105ddffa74.I1ddb243053ff763c91b663748b6a593ecc3b5634@changeidSigned-off-by: NLuca Coelho <luciano.coelho@intel.com>

drivers/net/wireless/intel/iwlwifi/iwl-dbg-tlv.c

@@ -808,7 +808,7 @@ static bool is_trig_data_contained(struct iwl_ucode_tlv *new,
 	struct iwl_fw_ini_trigger_tlv *old_trig = (void *)old->data;
 	__le32 *new_data = new_trig->data, *old_data = old_trig->data;
 	u32 new_dwords_num = iwl_tlv_array_len(new, new_trig, data);
-	u32 old_dwords_num = iwl_tlv_array_len(new, new_trig, data);
+	u32 old_dwords_num = iwl_tlv_array_len(old, old_trig, data);
 	int i, j;
 
 	for (i = 0; i < new_dwords_num; i++) {