mufs: get parent directory in mufs_rmpath() to remove the directory entry from

source/fs/mufs/path.c

@@ -96,12 +96,15 @@ int mufs_rmpath(struct mufs *fs, const char *path)
 	char data[1 << dev->log2_block_size];
 	struct mufs_dentry *entry, *next;
 	struct mufs_tree *tree;
-	char *s;
+	char *s, *name;
 	uint32_t va, offset, len;
 
 	if (!(s = mufs_abspath(path)))
 		return -1;
 
+	name = strrchr(s, '/');
+	*name++ = '\0';
+
 	if (!(tree = resolve_path(fs, s, NULL))) {
 		free(s);
 		return -1;