Java: Follow change of implicit parameter names

Author: igfoo

java/ql/test/library-tests/MemberRefExpr/parameters.expected

@@ -1,10 +1,10 @@
 | Test.java:3:22:3:24 | o |
 | Test.java:7:22:7:26 | i |
 | Test.java:45:22:45:26 | s |
-| Test.java:49:29:49:42 | p0 |
-| Test.java:50:29:50:42 | p0 |
-| Test.java:51:29:51:39 | p0 |
-| Test.java:52:40:52:64 | p0 |
-| Test.java:70:13:70:22 | p0 |
-| Test.java:71:13:71:26 | p0 |
-| Test.java:75:31:75:47 | p0 |
+| Test.java:49:29:49:42 | this |
+| Test.java:50:29:50:42 | this |
+| Test.java:51:29:51:39 | this |
+| Test.java:52:40:52:64 | this |
+| Test.java:70:13:70:22 | length |
+| Test.java:71:13:71:26 | length |
+| Test.java:75:31:75:47 | this |