check tx dup

[codecov[bot]]

Codecov Report

Patch coverage: 50.00% and project coverage change: +0.03 :tada:

Comparison is base (0977c1d) 61.78% compared to head (1be30a9) 61.81%.

Additional details and impacted files

```diff @@ Coverage Diff @@ ## master #1299 +/- ## ========================================== + Coverage 61.78% 61.81% +0.03% ========================================== Files 170 170 Lines 23650 23650 ========================================== + Hits 14611 14620 +9 + Misses 7209 7202 -7 + Partials 1830 1828 -2 ``` | [Impacted Files](https://app.codecov.io/gh/33cn/chain33/pull/1299?src=pr&el=tree&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=None) | Coverage Δ | | |---|---|---| | [blockchain/blockstore.go](https://app.codecov.io/gh/33cn/chain33/pull/1299?src=pr&el=tree&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=None#diff-YmxvY2tjaGFpbi9ibG9ja3N0b3JlLmdv) | `62.20% <0.00%> (ø)` | | | [util/exec.go](https://app.codecov.io/gh/33cn/chain33/pull/1299?src=pr&el=tree&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=None#diff-dXRpbC9leGVjLmdv) | `67.66% <ø> (ø)` | | | [system/mempool/base.go](https://app.codecov.io/gh/33cn/chain33/pull/1299?src=pr&el=tree&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=None#diff-c3lzdGVtL21lbXBvb2wvYmFzZS5nbw==) | `80.53% <100.00%> (+1.33%)` | :arrow_up: | ... and [11 files with indirect coverage changes](https://app.codecov.io/gh/33cn/chain33/pull/1299/indirect-changes?src=pr&el=tree-more&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=None)

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[libangzhu]

@bysomeone review 下

[33cn]

:tada: This PR is included in version 1.68.1 :tada:

The release is available on GitHub release

Your semantic-release bot :package::rocket: