test: Mark ~DebugLogHelper as noexcept(false)

We mark ~DebugLogHelper as noexcept(false) to be able to catch the
exception it throws. This lets us use it in test in combination with
BOOST_CHECK_THROW and BOOST_CHECK_NO_THROW to check that certain log
messages are (not) logged.

Co-Authored-By: Niklas Gogge <n.goeggi@gmail.com>

src/test/util/logging.h

@@ -33,7 +33,9 @@ class DebugLogHelper
 
 public:
     explicit DebugLogHelper(std::string message, MatchFn match = [](const std::string*){ return true; });
-    ~DebugLogHelper() { check_found(); }
+
+    //! Mark as noexcept(false) to catch any thrown exceptions.
+    ~DebugLogHelper() noexcept(false) { check_found(); }
 };
 
 #define ASSERT_DEBUG_LOG(message) DebugLogHelper UNIQUE_NAME(debugloghelper)(message)