same error to text for all OSes (had unknown error on Mac)

src/pcsc.hxx

@@ -31,8 +31,6 @@ namespace pcsc {
 #else
   #include <PCSC/pcsclite.h>
   #include <PCSC/wintypes.h>
-  #include <PCSC/pcsclite.h>
-  #include <PCSC/winscard.h>
 namespace pcsc {
   const std::string& strconv(const std::string& s) {
     return s;
@@ -405,7 +403,6 @@ namespace pcsc {
 
       //! Get the describing text of the last error
       std::string error() const {
-        #ifdef WIN32
         std::stringstream ss;
         switch (_state) {
           case ERROR_BROKEN_PIPE:
@@ -637,9 +634,6 @@ namespace pcsc {
               <<(_state&0xffff);
         }
         return ss.str();
-        #else
-        return pcsc_stringify_error(_state);
-        #endif
       }
       
       //................................................................methods