Relocate ECC_Start() to avoid test failures.

src/gtest/test_paymentdisclosure.cpp

@@ -93,7 +93,6 @@ public:
 // Note that the zpd: prefix is not part of the payment disclosure blob itself.  It is only
 // used as convention to improve the user experience when sharing payment disclosure blobs.
 TEST(paymentdisclosure, mainnet) {
-    ECC_Start();
     SelectParams(CBaseChainParams::MAIN);
 
     boost::filesystem::path pathTemp = boost::filesystem::temp_directory_path() / boost::filesystem::unique_path();

src/gtest/test_transaction_builder.cpp

@@ -14,6 +14,8 @@ static const std::string tSecretRegtest = "cND2ZvtabDbJ1gucx9GWH6XT9kgTAqfb6cotP
 
 TEST(TransactionBuilder, Invoke)
 {
+    ECC_Start();
+
     SelectParams(CBaseChainParams::REGTEST);
     UpdateNetworkUpgradeParameters(Consensus::UPGRADE_OVERWINTER, Consensus::NetworkUpgrade::ALWAYS_ACTIVE);
     UpdateNetworkUpgradeParameters(Consensus::UPGRADE_SAPLING, Consensus::NetworkUpgrade::ALWAYS_ACTIVE);