Merge pull request #586 from hvitved/csharp/cfg/field-split

C#: Handle multiple-field Boolean CFG splitting

csharp/ql/src/semmle/code/csharp/controlflow/ControlFlowGraph.qll

@@ -3644,7 +3644,7 @@ module ControlFlow {
               kind = rank[r](BooleanSplitSubKind kind0 |
                 kind0.getEnclosingCallable() = c and
                 kind0.startsSplit(_) |
-                kind0 order by kind0.getLocation().getStartLine(), kind0.getLocation().getStartColumn()
+                kind0 order by kind0.getLocation().getStartLine(), kind0.getLocation().getStartColumn(), kind0.toString()
               )
             )
           }