UBIFS: Add missing break statements in dbg_chk_pnode()

This is a minor fix. These two branches in 'dbg_chk_pnode()'
are dealing with different conditions. Although there is
no fault in current state, I think adding "break"s in
each end of branch is better.

Signed-off-by: hujianyang <hujianyang@huawei.com>
Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com>

fs/ubifs/lpt.c

diff --git a/fs/ubifs/lpt.c b/fs/ubifs/lpt.c
index d46b19e..b4fb422 100644
--- a/fs/ubifs/lpt.c
+++ b/fs/ubifs/lpt.c
@@ -2198,6 +2198,7 @@
 					  lprops->dirty);
 				return -EINVAL;
 			}
+			break;
 		case LPROPS_FREEABLE:
 		case LPROPS_FRDI_IDX:
 			if (lprops->free + lprops->dirty != c->leb_size) {
@@ -2206,6 +2207,7 @@
 					  lprops->dirty);
 				return -EINVAL;
 			}
+			break;
 		}
 	}
 	return 0;