Update partial flow test expectations

Author: atorralba

java/ql/test/library-tests/dataflow/partial/test.expected

@@ -1,5 +1,6 @@
 edges
 | A.java:4:16:4:18 | this <constr(this)> [post update] [elem] | A.java:22:17:22:25 | new Box(...) [elem] |
+| A.java:5:19:5:22 | elem | A.java:24:10:24:19 | other.elem |
 | A.java:12:5:12:5 | b [post update] : Box [elem] | A.java:13:12:13:12 | b : Box [elem] |
 | A.java:12:14:12:18 | src(...) : Object | A.java:12:5:12:5 | b [post update] : Box [elem] |
 | A.java:12:14:12:18 | src(...) : Object | A.java:12:5:12:18 | ...=... : Object |

java/ql/test/library-tests/dataflow/partial/testRev.expected

@@ -1,5 +1,6 @@
 edges
 | A.java:4:16:4:18 | this <constr(this)> [post update] [elem] | A.java:22:17:22:25 | new Box(...) [elem] |
+| A.java:5:19:5:22 | elem | A.java:24:10:24:19 | other.elem |
 | A.java:12:5:12:5 | b [post update] : Box [elem] | A.java:13:12:13:12 | b : Box [elem] |
 | A.java:12:14:12:18 | src(...) : Object | A.java:12:5:12:5 | b [post update] : Box [elem] |
 | A.java:12:14:12:18 | src(...) : Object | A.java:12:5:12:18 | ...=... : Object |
@@ -18,5 +19,6 @@ edges
 | 0 | A.java:23:13:23:17 | other [post update] [elem] |
 | 0 | A.java:24:10:24:14 | other [elem] |
 | 1 | A.java:4:16:4:18 | this <constr(this)> [post update] [elem] |
+| 1 | A.java:5:19:5:22 | elem |
 | 1 | A.java:28:5:28:5 | b [post update] [elem] |
 | 1 | A.java:28:14:28:25 | new Object(...) |