LWG3532 split_view<V, P>::inner-iterator<true>::operator++(int) should depend on Base

Author: jensmaurer

source/ranges.tex

@@ -5874,7 +5874,7 @@
 
     constexpr @\exposid{inner-iterator}@& operator++();
     constexpr decltype(auto) operator++(int) {
-      if constexpr (@\libconcept{forward_range}@<V>) {
+      if constexpr (@\libconcept{forward_range}@<@\exposid{Base}@>) {
         auto tmp = *this;
         ++*this;
         return tmp;