Reflection: Add operator-> overloads to reflection section iterators

Author: slavapestov

include/swift/Reflection/Records.h

@@ -85,6 +85,10 @@ struct FieldRecordIterator {
     return *Cur;
   }
 
+  const FieldRecord *operator->() const {
+    return Cur;
+  }
+
   FieldRecordIterator &operator++() {
     ++Cur;
     return *this;
@@ -159,6 +163,10 @@ class FieldDescriptorIterator
     return *reinterpret_cast<const FieldDescriptor *>(Cur);
   }
 
+  const FieldDescriptor *operator->() const {
+    return reinterpret_cast<const FieldDescriptor *>(Cur);
+  }
+
   FieldDescriptorIterator &operator++() {
     const auto &FR = this->operator*();
     const void *Next = reinterpret_cast<const char *>(Cur)
@@ -207,6 +215,10 @@ struct AssociatedTypeRecordIterator {
     return *Cur;
   }
 
+  const AssociatedTypeRecord *operator->() const {
+    return Cur;
+  }
+
   AssociatedTypeRecordIterator &operator++() {
     ++Cur;
     return *this;
@@ -278,6 +290,10 @@ class AssociatedTypeIterator
     return *reinterpret_cast<const AssociatedTypeDescriptor *>(Cur);
   }
 
+  const AssociatedTypeDescriptor *operator->() const {
+    return reinterpret_cast<const AssociatedTypeDescriptor *>(Cur);
+  }
+
   AssociatedTypeIterator &operator++() {
     const auto &ATR = this->operator*();
     size_t Size = sizeof(AssociatedTypeDescriptor) +
@@ -328,6 +344,10 @@ class BuiltinTypeDescriptorIterator
     return *reinterpret_cast<const BuiltinTypeDescriptor *>(Cur);
   }
 
+  const BuiltinTypeDescriptor *operator->() const {
+    return reinterpret_cast<const BuiltinTypeDescriptor *>(Cur);;
+  }
+
   BuiltinTypeDescriptorIterator &operator++() {
     const void *Next = reinterpret_cast<const char *>(Cur)
       + sizeof(BuiltinTypeDescriptor);