Merge #20180: test: Fix -Wunused-function warnings if configured --without-libs

76bbcc414f test: Fix -Wunused-function warning if configured --without-libs (Hennadii Stepanov)

Pull request description:

  On master (80c8a02f1b) compiling with gcc:
  ```
  $ ./configure --without-libs
  $ make clean && make
  ...
  test/script_tests.cpp:1369:23: warning: ‘CScriptWitness script_tests::ScriptWitnessFromJSON(const UniValue&)’ defined but not used [-Wunused-function]
   1369 | static CScriptWitness ScriptWitnessFromJSON(const UniValue& univalue)
        |                       ^~~~~~~~~~~~~~~~~~~~~
  test/script_tests.cpp:1357:28: warning: ‘std::vector<CTxOut> script_tests::TxOutsFromJSON(const UniValue&)’ defined but not used [-Wunused-function]
   1357 | static std::vector<CTxOut> TxOutsFromJSON(const UniValue& univalue)
        |                            ^~~~~~~~~~~~~~
  test/script_tests.cpp:1350:28: warning: ‘CMutableTransaction script_tests::TxFromHex(const string&)’ defined but not used [-Wunused-function]
   1350 | static CMutableTransaction TxFromHex(const std::string& str)
        |                            ^~~~~~~~~
  ...
  ```

  This change is move-only (nice to review with `git diff --color-moved`).

ACKs for top commit:
  practicalswift:
    ACK 76bbcc414f: diff looks correct
  fanquake:
    ACK 76bbcc414f - verified that this fixes the warnings. As mentioned can be reviewed with `git diff HEAD~ --color-moved=dimmed_zebra`.

Tree-SHA512: 7799ac190d1e3f15e38b36cfcd1f8d138be80cab6c6cfad8f7828e07deffc2037d52f1d967f7f233a3a8ed74eee184f5275076c2f364c3e363c77a1f40aa5030

src/test/script_tests.cpp

@@ -1347,36 +1347,6 @@ static CScript ScriptFromHex(const std::string& str)
     return CScript(data.begin(), data.end());
 }
 
-static CMutableTransaction TxFromHex(const std::string& str)
-{
-    CMutableTransaction tx;
-    VectorReader(SER_DISK, SERIALIZE_TRANSACTION_NO_WITNESS, ParseHex(str), 0) >> tx;
-    return tx;
-}
-
-static std::vector<CTxOut> TxOutsFromJSON(const UniValue& univalue)
-{
-    assert(univalue.isArray());
-    std::vector<CTxOut> prevouts;
-    for (size_t i = 0; i < univalue.size(); ++i) {
-        CTxOut txout;
-        VectorReader(SER_DISK, 0, ParseHex(univalue[i].get_str()), 0) >> txout;
-        prevouts.push_back(std::move(txout));
-    }
-    return prevouts;
-}
-
-static CScriptWitness ScriptWitnessFromJSON(const UniValue& univalue)
-{
-    assert(univalue.isArray());
-    CScriptWitness scriptwitness;
-    for (size_t i = 0; i < univalue.size(); ++i) {
-        auto bytes = ParseHex(univalue[i].get_str());
-        scriptwitness.stack.push_back(std::move(bytes));
-    }
-    return scriptwitness;
-}
-
 BOOST_AUTO_TEST_CASE(script_FindAndDelete)
 {
     // Exercise the FindAndDelete functionality
@@ -1502,6 +1472,36 @@ BOOST_AUTO_TEST_CASE(script_HasValidOps)
 
 #if defined(HAVE_CONSENSUS_LIB)
 
+static CMutableTransaction TxFromHex(const std::string& str)
+{
+    CMutableTransaction tx;
+    VectorReader(SER_DISK, SERIALIZE_TRANSACTION_NO_WITNESS, ParseHex(str), 0) >> tx;
+    return tx;
+}
+
+static std::vector<CTxOut> TxOutsFromJSON(const UniValue& univalue)
+{
+    assert(univalue.isArray());
+    std::vector<CTxOut> prevouts;
+    for (size_t i = 0; i < univalue.size(); ++i) {
+        CTxOut txout;
+        VectorReader(SER_DISK, 0, ParseHex(univalue[i].get_str()), 0) >> txout;
+        prevouts.push_back(std::move(txout));
+    }
+    return prevouts;
+}
+
+static CScriptWitness ScriptWitnessFromJSON(const UniValue& univalue)
+{
+    assert(univalue.isArray());
+    CScriptWitness scriptwitness;
+    for (size_t i = 0; i < univalue.size(); ++i) {
+        auto bytes = ParseHex(univalue[i].get_str());
+        scriptwitness.stack.push_back(std::move(bytes));
+    }
+    return scriptwitness;
+}
+
 /* Test simple (successful) usage of bitcoinconsensus_verify_script */
 BOOST_AUTO_TEST_CASE(bitcoinconsensus_verify_script_returns_true)
 {