libevent: separate log statements per level

Avoids ratelimiting unconditional log statements when debug logging
is enabled. Introduces slight behaviour change by removing
the category from unconditional logs, making them more uniform
with the other unconditional logs in the codebase.

Author: stickies-v

src/httpserver.cpp

@@ -422,22 +422,20 @@ static void HTTPWorkQueueRun(WorkQueue<HTTPClosure>* queue, int worker_num)
 /** libevent event log callback */
 static void libevent_log_cb(int severity, const char *msg)
 {
-    BCLog::Level level;
     switch (severity) {
     case EVENT_LOG_DEBUG:
-        level = BCLog::Level::Debug;
+        LogDebug(BCLog::LIBEVENT, "%s", msg);
         break;
     case EVENT_LOG_MSG:
-        level = BCLog::Level::Info;
+        LogInfo("%s", msg);
         break;
     case EVENT_LOG_WARN:
-        level = BCLog::Level::Warning;
+        LogWarning("%s", msg);
         break;
     default: // EVENT_LOG_ERR and others are mapped to error
-        level = BCLog::Level::Error;
+        LogError("%s", msg);
         break;
     }
-    LogPrintLevel(BCLog::LIBEVENT, level, "%s\n", msg);
 }
 
 bool InitHTTPServer(const util::SignalInterrupt& interrupt)