解决一个擦除的bug

Drivers/BSP/NET/lftpd/lftpd_log.c

@@ -0,0 +1,18 @@
+#include "private/lftpd_log.h"
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <stdarg.h>
+
+
+void lftpd_log_internal(const char* level, const char* format, ...) {
+	char buffer[256];
+	va_list args;
+	va_start(args, format);
+	int err = vsnprintf(buffer, sizeof(buffer), format, args);
+	va_end(args);
+	if (err >= sizeof(buffer)) {
+		return;
+	}
+	printf("%s %s\n", level, buffer);
+}