Rust: Accept consistency check failures.

Author: geoffw0

rust/ql/test/query-tests/unusedentities/CONSISTENCY/CfgConsistency.expected

@@ -9,3 +9,9 @@ multipleSuccessors
 | main.rs:430:17:430:17 | 0 | successor | main.rs:430:20:430:35 | ClosureExpr |
 | main.rs:434:17:434:17 | 0 | successor | main.rs:434:9:434:10 | a6 |
 | main.rs:434:17:434:17 | 0 | successor | main.rs:434:20:434:46 | ClosureExpr |
+| more.rs:32:17:32:17 | a | successor | more.rs:32:5:32:5 | i |
+| more.rs:32:17:32:17 | a | successor | more.rs:32:20:32:20 | b |
+deadEnd
+| more.rs:9:9:9:19 | Param |
+| more.rs:38:23:38:28 | Param |
+| more.rs:42:19:42:24 | Param |