fuse: simplify get_fuse_conn*()

All callers dereference the result, so no point in checking for NULL
pointer dereference here.
Signed-off-by: Miklos Szeredi <mszeredi@redhat.com>

fs/fuse/fuse_i.h

@@ -818,9 +818,7 @@ static inline struct fuse_mount *get_fuse_mount_super(struct super_block *sb)
 
 static inline struct fuse_conn *get_fuse_conn_super(struct super_block *sb)
 {
-	struct fuse_mount *fm = get_fuse_mount_super(sb);
-
-	return fm ? fm->fc : NULL;
+	return get_fuse_mount_super(sb)->fc;
 }
 
 static inline struct fuse_mount *get_fuse_mount(struct inode *inode)
@@ -830,9 +828,7 @@ static inline struct fuse_mount *get_fuse_mount(struct inode *inode)
 
 static inline struct fuse_conn *get_fuse_conn(struct inode *inode)
 {
-	struct fuse_mount *fm = get_fuse_mount(inode);
-
-	return fm ? fm->fc : NULL;
+	return get_fuse_mount_super(inode->i_sb)->fc;
 }
 
 static inline struct fuse_inode *get_fuse_inode(struct inode *inode)