ufs2: Fix porentially uninited use of fName field

At the same time make it in line with ext2 module

Change-Id: Iab879cf532cbc0b58b23cdd97d50419c21d199b6
Reviewed-on: https://review.haiku-os.org/c/haiku/+/6849
Reviewed-by: Adrien Destugues <pulkomandy@pulkomandy.tk>

src/add-ons/kernel/file_systems/ufs2/Volume.cpp

@@ -30,10 +30,8 @@ ufs2_super_block::IsValid()
 const char*
 Volume::Name() const
 {
-	if (fSuperBlock.fs_volname[0])
-		return fSuperBlock.fs_volname;
-
-	return fName;
+	// The name may be empty, in that case, userspace will generate one.
+	return fSuperBlock.fs_volname;
 }
 
 

src/add-ons/kernel/file_systems/ufs2/Volume.h

@@ -46,7 +46,6 @@ static	status_t				Identify(int fd, ufs2_super_block* superBlock);
 		mutex				fLock;
 		uint32				fFlags;
 		Inode*				fRootNode;
-		char				fName[32];
 };
 
 #endif	// VOLUME_H