Rust: Add another test case, fix an annotation.

Author: geoffw0

rust/ql/test/query-tests/security/CWE-696/BadCTorInitialization.expected

@@ -8,7 +8,7 @@
 | test.rs:69:9:69:24 | ...::stdin(...) | test.rs:66:1:66:7 | Attr | test.rs:69:9:69:24 | ...::stdin(...) | Call to ...::stdin(...) in a function with the ctor attribute. |
 | test.rs:90:5:90:35 | ...::sleep(...) | test.rs:88:1:88:7 | Attr | test.rs:90:5:90:35 | ...::sleep(...) | Call to ...::sleep(...) in a function with the ctor attribute. |
 | test.rs:97:5:97:23 | ...::exit(...) | test.rs:95:1:95:7 | Attr | test.rs:97:5:97:23 | ...::exit(...) | Call to ...::exit(...) in a function with the ctor attribute. |
-| test.rs:166:5:166:15 | ...::stdout(...) | test.rs:164:1:164:7 | Attr | test.rs:166:5:166:15 | ...::stdout(...) | Call to ...::stdout(...) in a function with the ctor attribute. |
+| test.rs:171:5:171:15 | ...::stdout(...) | test.rs:169:1:169:7 | Attr | test.rs:171:5:171:15 | ...::stdout(...) | Call to ...::stdout(...) in a function with the ctor attribute. |
 edges
 | test.rs:29:1:29:13 | Attr | test.rs:31:9:31:25 | ...::stdout(...) |
 | test.rs:34:1:34:13 | Attr | test.rs:36:9:36:25 | ...::stdout(...) |
@@ -19,4 +19,4 @@ edges
 | test.rs:66:1:66:7 | Attr | test.rs:69:9:69:24 | ...::stdin(...) |
 | test.rs:88:1:88:7 | Attr | test.rs:90:5:90:35 | ...::sleep(...) |
 | test.rs:95:1:95:7 | Attr | test.rs:97:5:97:23 | ...::exit(...) |
-| test.rs:164:1:164:7 | Attr | test.rs:166:5:166:15 | ...::stdout(...) |
+| test.rs:169:1:169:7 | Attr | test.rs:171:5:171:15 | ...::stdout(...) |

rust/ql/test/query-tests/security/CWE-696/test.rs

@@ -137,12 +137,12 @@ fn call_target3_2() {
     }
 }
 
-#[ctor] // $ MISSING: Source=source3_2
+#[ctor]
 fn harmless3_2() {
     call_target3_2();
 }
 
-#[ctor]
+#[ctor] // $ MISSING: Source=source3_3
 fn bad3_3() {
     call_target3_1();
     call_target3_2();
@@ -153,6 +153,11 @@ fn bad3_4() {
     bad3_3();
 }
 
+fn harmless3_5() {
+    call_target3_1();
+    call_target3_2();
+}
+
 // --- macros ---
 
 macro_rules! macro4_1 {