ITS#8300 more for node_move

When moving a node from one page to another, make sure other cursors'
parent index gets adjusted too.

libraries/liblmdb/mdb.c

@@ -7738,6 +7738,7 @@ mdb_node_move(MDB_cursor *csrc, MDB_cursor *cdst)
 					m3->mc_ki[csrc->mc_top] == csrc->mc_ki[csrc->mc_top]) {
 					m3->mc_pg[csrc->mc_top] = cdst->mc_pg[cdst->mc_top];
 					m3->mc_ki[csrc->mc_top] = cdst->mc_ki[cdst->mc_top];
+					m3->mc_ki[csrc->mc_top-1]++;
 				}
 			}
 		} else
@@ -7753,6 +7754,7 @@ mdb_node_move(MDB_cursor *csrc, MDB_cursor *cdst)
 					if (!m3->mc_ki[csrc->mc_top]) {
 						m3->mc_pg[csrc->mc_top] = cdst->mc_pg[cdst->mc_top];
 						m3->mc_ki[csrc->mc_top] = cdst->mc_ki[cdst->mc_top];
+						m3->mc_ki[csrc->mc_top-1]--;
 					} else {
 						m3->mc_ki[csrc->mc_top]--;
 					}