Merge bitcoin#12859: Bugfix: Include <memory> for std::unique_ptr

a5bca13 Bugfix: Include <memory> for std::unique_ptr (Luke Dashjr)

Pull request description:

  Not sure why all these includes were missing, but it's breaking builds for some users:

  https://bugs.gentoo.org/show_bug.cgi?id=652142

  (Added to all files with a reference to `std::unique_ptr`)

Tree-SHA512: 8a2c67513ca07b9bb52c34e8a20b15e56f8af2530310d9ee9b0a69694dd05e02e7a3683f14101a2685d457672b56addec591a0bb83900a0eb8e2a43d43200509

src/test/allocator_tests.cpp

@@ -9,6 +9,8 @@
 
 #include <memory>
 
+#include <memory>
+
 #include <boost/test/unit_test.hpp>
 
 BOOST_FIXTURE_TEST_SUITE(allocator_tests, BasicTestingSetup)

src/test/dbwrapper_tests.cpp

@@ -9,6 +9,8 @@
 
 #include <memory>
 
+#include <memory>
+
 #include <boost/test/unit_test.hpp>
 
 // Test if a string consists entirely of null characters

src/test/test_dash_main.cpp

@@ -9,6 +9,8 @@
 
 #include <memory>
 
+#include <memory>
+
 #include <boost/test/unit_test.hpp>
 #include <boost/test/unit_test_monitor.hpp>