Rust: Use just end locations for now, to avoid all false positive lines caused by attached comments.

rust/ql/lib/codeql/files/FileSystem.qll

@@ -47,11 +47,10 @@ class File extends Container, Impl::File {
         exists(AstNode node, Location loc |
           not node instanceof Comment and
           not node instanceof SourceFile and
-          not node instanceof Item and // ignore Items for now as we're getting their locations wrong when a comment is attached
           loc = node.getLocation()
         |
           node.getFile() = this and
-          line = [loc.getStartLine(), loc.getEndLine()] and
+          line = [/*loc.getStartLine(), */loc.getEndLine()] and // ignore start locations for now as we're getting them wrong for things with a comment attached
           not loc instanceof EmptyLocation
         )
       )

rust/ql/test/query-tests/diagnostics/LinesOfCode.expected

@@ -1 +1 @@
-| 68 |
+| 61 |

rust/ql/test/query-tests/diagnostics/LinesOfUserCode.expected

@@ -1 +1 @@
-| 68 |
+| 61 |

rust/ql/test/query-tests/diagnostics/LinesOfUserCodeInFiles.expected

@@ -1,5 +1,5 @@
-| comments.rs:0:0:0:0 | comments.rs | 20 |
 | my_struct.rs:0:0:0:0 | my_struct.rs | 20 |
+| comments.rs:0:0:0:0 | comments.rs | 13 |
 | main.rs:0:0:0:0 | main.rs | 8 |
 | lib.rs:0:0:0:0 | lib.rs | 7 |
 | my_macro.rs:0:0:0:0 | my_macro.rs | 7 |

rust/ql/test/query-tests/diagnostics/SummaryStats.expected

@@ -1,5 +1,5 @@
 | Elements extracted | 290 |
 | Elements unextracted | 0 |
 | Files extracted | 7 |
-| Lines of code extracted | 68 |
-| Lines of user code extracted | 68 |
+| Lines of code extracted | 61 |
+| Lines of user code extracted | 61 |