[clang-tidy] use override instead of virtual

Found with modernize-use-override

Signed-off-by: Rosen Penev <rosenp@gmail.com>

src/archive/plugins/Bzip2ArchivePlugin.cxx

@@ -47,7 +47,7 @@ public:
 			name.erase(len - 4);
 	}
 
-	virtual void Visit(ArchiveVisitor &visitor) override {
+	void Visit(ArchiveVisitor &visitor) override {
 		visitor.VisitArchiveEntry(name.c_str());
 	}
 
@@ -68,7 +68,7 @@ public:
 	Bzip2InputStream(const std::shared_ptr<InputStream> &_input,
 			 const char *uri,
 			 Mutex &mutex);
-	~Bzip2InputStream();
+	~Bzip2InputStream() override;
 
 	/* virtual methods from InputStream */
 	bool IsEOF() const noexcept override;

src/archive/plugins/Iso9660ArchivePlugin.cxx

@@ -71,7 +71,7 @@ public:
 	void Visit(char *path, size_t length, size_t capacity,
 		   ArchiveVisitor &visitor);
 
-	virtual void Visit(ArchiveVisitor &visitor) override;
+	void Visit(ArchiveVisitor &visitor) override;
 
 	InputStreamPtr OpenStream(const char *path,
 				  Mutex &mutex) override;
@@ -152,7 +152,7 @@ public:
 		SetReady();
 	}
 
-	~Iso9660InputStream() {
+	~Iso9660InputStream() override {
 		free(statbuf);
 	}
 

src/archive/plugins/ZzipArchivePlugin.cxx

@@ -57,7 +57,7 @@ public:
 	ZzipArchiveFile(std::shared_ptr<ZzipDir> &&_dir)
 		:dir(std::move(_dir)) {}
 
-	virtual void Visit(ArchiveVisitor &visitor) override;
+	void Visit(ArchiveVisitor &visitor) override;
 
 	InputStreamPtr OpenStream(const char *path,
 				  Mutex &mutex) override;
@@ -106,7 +106,7 @@ public:
 		SetReady();
 	}
 
-	~ZzipInputStream() {
+	~ZzipInputStream() override {
 		zzip_file_close(file);
 	}