Remove trailing whitespace (#3668)

Foundation/include/Poco/DirectoryIterator_UNIX.h

@@ -30,13 +30,13 @@ class Foundation_API DirectoryIteratorImpl
 public:
 	DirectoryIteratorImpl(const std::string& path);
 	~DirectoryIteratorImpl();
-	
+
 	void duplicate();
 	void release();
-	
+
 	const std::string& get() const;
 	const std::string& next();
-	
+
 private:
 	DIR*        _pDir;
 	std::string _current;