Merge #338

338: chore(deps): bump secp256k1 from 0.12.0 to 0.12.2 r=zhangsoledad a=dependabot[bot]

Bumps [secp256k1](https://github.com/rust-bitcoin/rust-secp256k1) from 0.12.0 to 0.12.2.
<details>
<summary>Changelog</summary>

*Sourced from [secp256k1's changelog](https://github.com/rust-bitcoin/rust-secp256k1/blob/master/CHANGELOG.md).*

> # 0.12.2 - 2019-01-18
> 
> * Fuzzer bug fix
> 
> # 0.12.1 - 2019-01-15
> 
> * Minor bug fixes
> * Fixed `cc` crate version to maintain minimum compiler version without breakage
> * Removed `libc` dependency as it our uses have been subsumed into stdlib
</details>
<details>
<summary>Commits</summary>

- [`77619e8`](rust-bitcoin/rust-secp256k1@77619e8) Merge pull request [#95](https://github-redirect.dependabot.com/rust-bitcoin/rust-secp256k1/issues/95) from rust-bitcoin/2019-01-0.12.2
- [`432face`](rust-bitcoin/rust-secp256k1@432face) bump version to 0.12.2
- [`a54f9b7`](rust-bitcoin/rust-secp256k1@a54f9b7) Merge pull request [#94](https://github-redirect.dependabot.com/rust-bitcoin/rust-secp256k1/issues/94) from TheBlueMatt/master
- [`f90e9f3`](rust-bitcoin/rust-secp256k1@f90e9f3) Stop checking context flags for secp256k1_ecdh as its not required
- [`0466b5e`](rust-bitcoin/rust-secp256k1@0466b5e) Merge pull request [#93](https://github-redirect.dependabot.com/rust-bitcoin/rust-secp256k1/issues/93) from rust-bitcoin/2019-0.12.1
- [`dd8866c`](rust-bitcoin/rust-secp256k1@dd8866c) bump version to 0.12.1
- [`dee10b9`](rust-bitcoin/rust-secp256k1@dee10b9) Merge pull request [#89](https://github-redirect.dependabot.com/rust-bitcoin/rust-secp256k1/issues/89) from TheBlueMatt/master
- [`fba7dfb`](rust-bitcoin/rust-secp256k1@fba7dfb) Fix cargo warning output and wrong pointer width ([#88](https://github-redirect.dependabot.com/rust-bitcoin/rust-secp256k1/issues/88))
- [`a74cbb6`](rust-bitcoin/rust-secp256k1@a74cbb6) Sync fuzztarget combine with tweak_add since real functions do that
- [`4f44a0f`](rust-bitcoin/rust-secp256k1@4f44a0f) Merge pull request [#87](https://github-redirect.dependabot.com/rust-bitcoin/rust-secp256k1/issues/87) from tomaka/rm-libc
- Additional commits viewable in [compare view](rust-bitcoin/rust-secp256k1@0.12.0...0.12.2)
</details>
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[![Dependabot compatibility score](https://api.dependabot.com/badges/compatibility_score?dependency-name=secp256k1&package-manager=cargo&previous-version=0.12.0&new-version=0.12.2)](https://dependabot.com/compatibility-score.html?dependency-name=secp256k1&package-manager=cargo&previous-version=0.12.0&new-version=0.12.2)

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Co-authored-by: dependabot[bot] <[email protected]>

util/crypto/Cargo.toml

@@ -7,7 +7,7 @@ edition = "2018"
 
 [dependencies]
 lazy_static = "1.3"
-secp256k1 = {version = "0.12.0", optional = true }
+secp256k1 = {version = "0.12.2", optional = true }
 failure = "0.1.5"
 rand = "0.6"
 numext-fixed-hash = { version = "0.1", features = ["support_rand", "support_heapsize", "support_serde"] }