Internals: Use specific types on some cloneTrees. No functional change.

src/V3Assert.cpp

@@ -256,7 +256,7 @@ private:
                 ifp = nextifp;
             } while (ifp);
 
-            AstNode* const newifp = nodep->cloneTree(false);
+            AstIf* const newifp = nodep->cloneTree(false);
             const bool allow_none = nodep->unique0Pragma();
 
             // Empty case means no property

src/V3Subst.cpp

@@ -123,7 +123,7 @@ public:
         if (!m_varp->isWide() && !m_whole.m_complex && m_whole.m_assignp && !m_wordAssign) {
             const AstNodeAssign* const assp = m_whole.m_assignp;
             UASSERT_OBJ(assp, errp, "Reading whole that was never assigned");
-            return (assp->rhsp());
+            return assp->rhsp();
         } else {
             return nullptr;
         }
@@ -133,7 +133,7 @@ public:
         if (!m_whole.m_complex && !m_whole.m_assignp && !m_words[word].m_complex) {
             const AstNodeAssign* const assp = getWordAssignp(word);
             UASSERT_OBJ(assp, errp, "Reading a word that was never assigned, or bad word #");
-            return (assp->rhsp());
+            return assp->rhsp();
         } else {
             return nullptr;
         }

src/V3Width.cpp

@@ -3884,7 +3884,7 @@ private:
                  patp = VN_AS(patp->nextp(), PatMember)) {
                 const int times = visitPatMemberRep(patp);
                 for (int i = 1; i < times; i++) {
-                    AstNode* const newp = patp->cloneTree(false);
+                    AstPatMember* const newp = patp->cloneTree(false);
                     patp->addNextHere(newp);
                     // This loop will see the new elements as part of nextp()
                 }