db/Configured: allocate ConfigBlock on the stack

src/db/Configured.cxx

@@ -43,16 +43,13 @@ CreateConfiguredDatabase(EventLoop &loop, DatabaseListener &listener,
 		return nullptr;
 	}
 
-	ConfigBlock *allocated = nullptr;
-
-	if (param == nullptr && path != nullptr) {
-		allocated = new ConfigBlock(path->line);
-		allocated->AddBlockParam("path", path->value.c_str(),
-					 path->line);
-		param = allocated;
-	}
-
-	if (param == nullptr) {
+	if (param != nullptr)
+		return DatabaseGlobalInit(loop, listener, *param, error);
+	else if (path != nullptr) {
+		ConfigBlock block(path->line);
+		block.AddBlockParam("path", path->value.c_str(), path->line);
+		return DatabaseGlobalInit(loop, listener, block, error);
+	} else {
 		/* if there is no override, use the cache directory */
 
 		const AllocatedPath cache_dir = GetUserCacheDir();
@@ -65,13 +62,8 @@ CreateConfiguredDatabase(EventLoop &loop, DatabaseListener &listener,
 		if (db_file_utf8.empty())
 			return nullptr;
 
-		allocated = new ConfigBlock();
-		allocated->AddBlockParam("path", db_file_utf8.c_str(), -1);
-		param = allocated;
+		ConfigBlock block;
+		block.AddBlockParam("path", db_file_utf8.c_str(), -1);
+		return DatabaseGlobalInit(loop, listener, block, error);
 	}
-
-	Database *db = DatabaseGlobalInit(loop, listener, *param,
-					  error);
-	delete allocated;
-	return db;
 }