Remove false positive GCC warning #18052

1. 
   hebasto commented at 9:16 PM on February 1, 2020: member

   On master (f05c1ac444e0c893516535bfdf07c5c8cd9bce16) GCC compiler fires a false positive -Wmaybe-uninitialized:

   wallet/wallet.cpp: In static member function ‘static std::shared_ptr<CWallet> CWallet::CreateWalletFromFile(interfaces::Chain&, const WalletLocation&, std::__cxx11::string&, std::vector<std::__cxx11::basic_string<char> >&, uint64_t)’:
   wallet/wallet.cpp:3913:27: warning: ‘*((void*)& time_first_key +8)’ may be used uninitialized in this function [-Wmaybe-uninitialized]
            Optional<int64_t> time_first_key;
                              ^~~~~~~~~~~~~~
   

   The same as #15292.

   This PR leverages a workaround and removes the warning.

2. Remove false positive GCC warning e9434ee03e
3. hebasto requested review from achow101 on Feb 1, 2020
4. fanquake added the label Wallet on Feb 1, 2020
5. kristapsk approved
6. 
   kristapsk commented at 1:19 AM on February 2, 2020: contributor

   ACK e9434ee03efdfc0a5a54cf46561e95fd93cba007

7. 
   DrahtBot commented at 3:25 AM on February 2, 2020: member

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   Conflicts

   No conflicts as of last run.

8. 
   laanwj commented at 1:43 PM on February 5, 2020: member

   ACK e9434ee03efdfc0a5a54cf46561e95fd93cba007, removes the warning for me (gcc 7.4.0)

9. laanwj referenced this in commit b30a1f3e39 on Feb 5, 2020
10. laanwj merged this on Feb 5, 2020
11. laanwj closed this on Feb 5, 2020

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12. hebasto deleted the branch on Feb 5, 2020
13. 
    ddustin commented at 10:17 PM on February 5, 2020: none

    Looks like we got a bonus semicolon

14. sidhujag referenced this in commit 7b273400f2 on Feb 9, 2020
15. jasonbcox referenced this in commit e37acaefee on Oct 10, 2020
16. sidhujag referenced this in commit 3f4c6b911e on Nov 10, 2020
17. DrahtBot locked this on Feb 15, 2022

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achow101