Fixed mongoose breaking API change

Author: mickem

libs/mongoose-cpp/Helpers.cpp

@@ -11,13 +11,13 @@ namespace Mongoose {
 std::string Helpers::encode_b64(const std::string &str) {
   const hlp::char_buffer dst((str.size() * 3) + 3);
   const hlp::char_buffer src(str);
-  size_t encoded_len = mg_base64_encode(src.get_t<unsigned char *>(), static_cast<int>(str.size()), dst.get(), dst.size());
+  size_t encoded_len = mg_base64_encode(src.get_t<unsigned char *>(), dst.get(), dst.size());
   return std::string{dst.get(), encoded_len};
 }
 std::string Helpers::decode_b64(const std::string &str) {
   const hlp::char_buffer dst(str.size() * 3);
   const hlp::char_buffer src(str);
-  size_t decoded_len = mg_base64_decode(src.get_t<char *>(), static_cast<int>(str.size()), dst.get(), dst.size());
+  size_t decoded_len = mg_base64_decode(src.get_t<char *>(), dst.get(), dst.size());
   return std::string{dst.get(), decoded_len};
 }
 }  // namespace Mongoose