[XFS] Remove a couple of redundant NULL parent inode pointer checks.

SGI Modid: xfs-linux:xfs-kern:173033a
Signed-off-by: nathans@sgi.com

fs/xfs/xfs_inode.c

@@ -1140,8 +1140,7 @@ xfs_ialloc(
 	 * Call the space management code to pick
 	 * the on-disk inode to be allocated.
 	 */
-	ASSERT(pip != NULL);
-	error = xfs_dialloc(tp, pip ? pip->i_ino : 0, mode, okalloc,
+	error = xfs_dialloc(tp, pip->i_ino, mode, okalloc,
 			    ialloc_context, call_again, &ino);
 	if (error != 0) {
 		return error;

fs/xfs/xfs_inode.h

@@ -459,8 +459,8 @@ xfs_inode_t *xfs_bhvtoi(struct bhv_desc *bhvp);
  * directory, group of new file is set to that of the parent, and
  * new subdirectory gets S_ISGID bit from parent.
  */
-#define XFS_INHERIT_GID(pip, vfsp)	((pip) != NULL && \
-	(((vfsp)->vfs_flag & VFS_GRPID) || ((pip)->i_d.di_mode & S_ISGID)))
+#define XFS_INHERIT_GID(pip, vfsp)	\
+	(((vfsp)->vfs_flag & VFS_GRPID) || ((pip)->i_d.di_mode & S_ISGID))
 
 /*
  * xfs_iget.c prototypes.