Fixup c57a175

Turns out remove_const alone only removes the const from the pointer, not from the type
itself, so the expression wasn't returning true. This strips the pointer out before removing
const and matches against char instead of char*

(cherry-picked from commit a7e1ff8)

src/lexical_cast.hpp

@@ -193,7 +193,7 @@ struct lexical_caster<
 	  long long
 	, From
 	, void
-	, std::enable_if_t<std::is_same<char*, std::remove_const_t<From>>::value>
+	, std::enable_if_t<std::is_same<char, std::remove_const_t<std::remove_pointer_t<From>>>::value>
 	>
 {
 	long long operator()(From value, boost::optional<long long> fallback) const
@@ -249,7 +249,7 @@ struct lexical_caster<
 	  To
 	, From
 	, std::enable_if_t<std::is_integral<To>::value && std::is_signed<To>::value && !std::is_same<To, long long>::value>
-	, std::enable_if_t<std::is_same<char*, std::remove_const_t<From>>::value>
+	, std::enable_if_t<std::is_same<char, std::remove_const_t<std::remove_pointer_t<From>>>::value>
 	>
 {
 	To operator()(From value, boost::optional<To> fallback) const
@@ -307,7 +307,7 @@ struct lexical_caster<
 	  To
 	, From
 	, std::enable_if_t<std::is_floating_point<To>::value>
-	, std::enable_if_t<std::is_same<char*, std::remove_const_t<From>>::value>
+	, std::enable_if_t<std::is_same<char, std::remove_const_t<std::remove_pointer_t<From>>>::value>
 	>
 {
 	To operator()(From value, boost::optional<To> fallback) const
@@ -376,7 +376,7 @@ struct lexical_caster<
 	  unsigned long long
 	, From
 	, void
-	, std::enable_if_t<std::is_same<char*, std::remove_const_t<From>>::value>
+	, std::enable_if_t<std::is_same<char, std::remove_const_t<std::remove_pointer_t<From>>>::value>
 	>
 {
 	unsigned long long operator()(From value, boost::optional<unsigned long long> fallback) const
@@ -433,7 +433,7 @@ struct lexical_caster<
 	  To
 	, From
 	, std::enable_if_t<std::is_unsigned<To>::value && !std::is_same<To, unsigned long long>::value>
-	, std::enable_if_t<std::is_same<char*, std::remove_const_t<From>>::value>
+	, std::enable_if_t<std::is_same<char, std::remove_const_t<std::remove_pointer_t<From>>>::value>
 	>
 {
 	To operator()(From value, boost::optional<To> fallback) const