removed an unnecessary cast (fixed #162)

README.md

@@ -375,7 +375,7 @@ I deeply appreciate the help of the following people.
 - [Eric Cornelius](https://github.com/EricMCornelius) pointed out a bug in the handling with NaN and infinity values. He also improved the performance of the string escaping.
 - [易思龙](https://github.com/likebeta) implemented a conversion from anonymous enums.
 - [kepkin](https://github.com/kepkin) patiently pushed forward the support for Microsoft Visual studio.
-- [gregmarr](https://github.com/gregmarr) simplified the implementation of reverse iterators.
+- [gregmarr](https://github.com/gregmarr) simplified the implementation of reverse iterators and helped with numerous hints and improvements.
 - [Caio Luppi](https://github.com/caiovlp) fixed a bug in the Unicode handling.
 - [dariomt](https://github.com/dariomt) fixed some typos in the examples.
 - [Daniel Frey](https://github.com/d-frey) cleaned up some pointers and implemented exception-safe memory allocation.

src/json.hpp

@@ -7866,8 +7866,7 @@ no parse error occurred.
 */
 inline nlohmann::json operator "" _json(const char* s, std::size_t)
 {
-    return nlohmann::json::parse(reinterpret_cast<nlohmann::json::string_t::value_type*>
-                                 (const_cast<char*>(s)));
+    return nlohmann::json::parse(reinterpret_cast<const nlohmann::json::string_t::value_type*>(s));
 }
 
 #endif

src/json.hpp.re2c

@@ -7145,8 +7145,7 @@ no parse error occurred.
 */
 inline nlohmann::json operator "" _json(const char* s, std::size_t)
 {
-    return nlohmann::json::parse(reinterpret_cast<nlohmann::json::string_t::value_type*>
-                                 (const_cast<char*>(s)));
+    return nlohmann::json::parse(reinterpret_cast<const nlohmann::json::string_t::value_type*>(s));
 }
 
 #endif