Fix memory leaks - batch 2 (#6417)

src/V3Broken.cpp

@@ -371,12 +371,12 @@ void V3Broken::allowMidvisitorCheck(bool flag) { s_brokenAllowMidvisitorCheck =
 void V3Broken::selfTest() {
     // Exercise addNewed and deleted for coverage, as otherwise only used with VL_LEAK_CHECKS
     FileLine* const fl = new FileLine{FileLine::commandLineFilename()};
-    const AstNode* const newp = new AstBegin{fl, "[EditWrapper]", nullptr};
+    AstNode* const newp = new AstBegin{fl, "[EditWrapper]", nullptr};
     // Don't actually do it with VL_LEAK_CHECKS, when new/delete calls these.
     // Otherwise you call addNewed twice on the same address, which is an error.
 #ifndef VL_LEAK_CHECKS
     addNewed(newp);
     deleted(newp);
 #endif
-    VL_DO_DANGLING(delete newp, newp);
+    VL_DO_DANGLING(newp->deleteTree(), newp);
 }