Upgrade FileStore format verion due to addition of packed attribute

src/ox/fs/filestore.hpp

@@ -17,7 +17,7 @@ struct __attribute__((packed)) FileStoreHeader {
 	public:
 		typedef InodeId InodeId_t;
 		typedef FsT FsSize_t;
-		const static auto VERSION = 4;
+		const static auto VERSION = 5;
 
 	private:
 		uint16_t m_version;

src/ox/fs/filesystem.hpp

@@ -106,7 +106,7 @@ class FileSystemTemplate: public FileSystem {
 		FileStore *store = nullptr;
 
 	public:
-		FileSystemTemplate(void *buff);
+		explicit FileSystemTemplate(void *buff);
 
 		int mkdir(const char *path);