Merge #19309: refactor: Fix link error with --enable-debug

b83cc0f Fix link error with --enable-debug (Hennadii Stepanov)

Pull request description:

  Fixes a link error on master (39bd9dd):
  ```
  $ ./configure --enable-debug
  $ make
  ...
  bitcoin_wallet-bitcoin-wallet.o:(.data.rel.ro+0x0): undefined reference to `InitError(bilingual_str const&)'
  libbitcoin_wallet_tool.a(libbitcoin_wallet_tool_a-wallettool.o):(.data.rel.ro+0x8): undefined reference to `InitError(bilingual_str const&)'
  libbitcoin_wallet.a(libbitcoin_wallet_a-salvage.o):(.data.rel.ro+0x8): undefined reference to `InitError(bilingual_str const&)'
  libbitcoin_wallet.a(libbitcoin_wallet_a-wallet.o):(.data.rel.ro+0x8): undefined reference to `InitError(bilingual_str const&)'
  libbitcoin_wallet.a(libbitcoin_wallet_a-walletdb.o):(.data.rel.ro+0x8): undefined reference to `InitError(bilingual_str const&)'
  libbitcoin_wallet.a(libbitcoin_wallet_a-wallet.o):(.data.rel.ro+0x8): more undefined references to `InitError(bilingual_str const&)' follow
  collect2: error: ld returned 1 exit status
  ```

  See:
  - bitcoin/bitcoin#19295 (comment)
  - bitcoin/bitcoin#19295 (comment)

ACKs for top commit:
  achow101:
    Re-ACK b83cc0f

Tree-SHA512: f563d978b6725284049449bb0b3a184d356f32e9b63bcadb0ba71352d3d521af3dbb4a7b4fc0a5a620ed99c357e59f62249c10d0defc0cbe7775f2c06791dabe

Author: MarcoFalke

src/ui_interface.h

@@ -122,7 +122,7 @@ void InitWarning(const bilingual_str& str);
 
 /** Show error message **/
 bool InitError(const bilingual_str& str);
-constexpr auto AbortError = InitError;
+inline bool AbortError(const bilingual_str& str) { return InitError(str); }
 
 extern CClientUIInterface uiInterface;