Close the target file in CLogFileTarget's destructor

lib/logging/CLogger.cpp

@@ -402,3 +402,7 @@ void CLogFileTarget::write(const LogRecord & record)
 
 const CLogFormatter & CLogFileTarget::getFormatter() const { return formatter; }
 void CLogFileTarget::setFormatter(const CLogFormatter & formatter) { this->formatter = formatter; }
+
+CLogFileTarget::~CLogFileTarget() {
+	file.close();
+}

lib/logging/CLogger.h

@@ -213,6 +213,7 @@ public:
 	/// Constructs a CLogFileTarget and opens the file designated by filePath. If the append parameter is true, the file
 	/// will be appended to. Otherwise the file designated by filePath will be truncated before being opened.
 	explicit CLogFileTarget(boost::filesystem::path filePath, bool append = true);
+	~CLogFileTarget();
 
 	const CLogFormatter & getFormatter() const;
 	void setFormatter(const CLogFormatter & formatter);