PS: Flow through parentheses.

Author: MathiasVP

powershell/ql/lib/semmle/code/powershell/dataflow/internal/DataFlowPrivate.qll

@@ -104,6 +104,8 @@ module LocalFlow {
     or
     nodeFrom.asExpr() = nodeTo.asExpr().(CfgNodes::ExprNodes::ConvertCfgNode).getBase()
     or
+    nodeFrom.asStmt() = nodeTo.asExpr().(CfgNodes::ExprNodes::ParenCfgNode).getBase()
+    or
     exists(
       CfgNodes::ExprNodes::ArrayExprCfgNode arrayExpr, EscapeContainer::EscapeContainer container
     |

powershell/ql/test/library-tests/dataflow/local/test.expected

@@ -31,6 +31,7 @@
 | test.ps1:13:6:13:10 | (...) | test.ps1:13:1:13:3 | d |
 | test.ps1:13:6:13:10 | (...) | test.ps1:13:1:13:10 | ...=... |
 | test.ps1:13:6:13:10 | (...) | test.ps1:13:6:13:10 | (...) |
+| test.ps1:13:7:13:9 | c | test.ps1:13:6:13:10 | (...) |
 | test.ps1:13:7:13:9 | c | test.ps1:13:7:13:9 | c |
 | test.ps1:14:1:14:8 | Sink | test.ps1:14:1:14:8 | pre-return value for Sink |
 | test.ps1:14:1:14:8 | Sink | test.ps1:14:1:14:8 | pre-return value for Sink |