Remove unused parameter from CXXRecordDecl::forallBases [NFC]

[aaronpuchert]

Summary

Apparently all users of the function were fine with short-circuiting
and none cared to override the default argument.

[aaron.ballman]

LGTM

clang/include/clang/AST/DeclCXX.h

   /// or indirect base classes of this type.
   ///
   /// The class itself does not count as a base class.  This routine
   /// returns false if the class has non-computable base classes.
   ///
   /// \param BaseMatches Callback invoked for each (direct or indirect) base
   /// class of this type, or if \p AllowShortCircuit is true then until a call
   /// returns false.
-  ///
-  /// \param AllowShortCircuit if false, forces the callback to be called
-  /// for every base class, even if a dependent or non-matching base was
-  /// found.
-  bool forallBases(ForallBasesCallback BaseMatches,
-                   bool AllowShortCircuit = true) const;
+  bool forallBases(ForallBasesCallback BaseMatches) const;
 
   /// Function type used by lookupInBases() to determine whether a
   /// specific base class subobject matches the lookup criteria.
   ///
   /// \param Specifier the base-class specifier that describes the inheritance
   /// from the base class we are trying to match.
   ///
   /// \param Path the current path, from the most-derived class down to the

clang/lib/AST/CXXInheritance.cpp

CXXRecordDecl::isCurrentInstantiation(const DeclContext *CurContext) const {
 
   for (; !CurContext->isFileContext(); CurContext = CurContext->getParent())
     if (CurContext->Equals(this))
       return true;
 
   return false;
 }
 
-bool CXXRecordDecl::forallBases(ForallBasesCallback BaseMatches,
-                                bool AllowShortCircuit) const {
+bool CXXRecordDecl::forallBases(ForallBasesCallback BaseMatches) const {
   SmallVector<const CXXRecordDecl*, 8> Queue;
 
   const CXXRecordDecl *Record = this;
-  bool AllMatches = true;
   while (true) {
     for (const auto &I : Record->bases()) {
       const RecordType *Ty = I.getType()->getAs<RecordType>();
-      if (!Ty) {
-        if (AllowShortCircuit) return false;
-        AllMatches = false;
-        continue;
-      }
+      if (!Ty)
+        return false;
 
       CXXRecordDecl *Base =
             cast_or_null<CXXRecordDecl>(Ty->getDecl()->getDefinition());
       if (!Base ||
           (Base->isDependentContext() &&
            !Base->isCurrentInstantiation(Record))) {
-        if (AllowShortCircuit) return false;
-        AllMatches = false;
-        continue;
+        return false;
       }
 
       Queue.push_back(Base);
-      if (!BaseMatches(Base)) {
-        if (AllowShortCircuit) return false;
-        AllMatches = false;
-        continue;
-      }
+      if (!BaseMatches(Base))
+        return false;
     }
 
     if (Queue.empty())
       break;
     Record = Queue.pop_back_val(); // not actually a queue.
   }
 
-  return AllMatches;
+  return true;
 }
 
 bool CXXBasePaths::lookupInBases(ASTContext &Context,
                                  const CXXRecordDecl *Record,
                                  CXXRecordDecl::BaseMatchesCallback BaseMatches,
                                  bool LookupInDependent) {
   bool FoundPath = false;