Use correct type for IFD* functions

Fix the ifdwrapper.h header file so the functions types correspond to
what we have in ifdwrapper.c since the commit
eecf685

The compilation was broken on macOS with:
ifdwrapper.c:67:14: error: conflicting types for 'IFDSetPTS'
RESPONSECODE IFDSetPTS(READER_CONTEXT * rContext, DWORD dwProtocol,
             ^
./ifdwrapper.h:52:7: note: previous declaration is here
        LONG IFDSetPTS(READER_CONTEXT *, DWORD, UCHAR, UCHAR, UCHAR, UCHAR);
             ^

Compilation was correct on GNU/Linux but incorrect on macOS because we
have:
    typedef long RESPONSECODE;
For both macOS and GNU/Linux.

and
    typedef int32_t LONG;
for maCOS and
    typedef long LONG;
For GNU/LInux

So on macOS LONG and RESPONSECODE types are not equivalent.

src/ifdwrapper.h

@@ -39,18 +39,18 @@ THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 #ifndef __ifdwrapper_h__
 #define __ifdwrapper_h__
 
- LONG IFDOpenIFD(READER_CONTEXT *);
- LONG IFDCloseIFD(READER_CONTEXT *);
- LONG IFDPowerICC(READER_CONTEXT *, DWORD, PUCHAR, /*@out@*/ PDWORD);
+ RESPONSECODE IFDOpenIFD(READER_CONTEXT *);
+ RESPONSECODE IFDCloseIFD(READER_CONTEXT *);
+ RESPONSECODE IFDPowerICC(READER_CONTEXT *, DWORD, PUCHAR, /*@out@*/ PDWORD);
  LONG IFDStatusICC(READER_CONTEXT *, /*@out@*/ PDWORD);
  LONG IFDControl_v2(READER_CONTEXT *, PUCHAR, DWORD, /*@out@*/ PUCHAR,
  PDWORD);
  LONG IFDControl(READER_CONTEXT *, DWORD, LPCVOID, DWORD, LPVOID,
  DWORD, LPDWORD);
  LONG IFDTransmit(READER_CONTEXT *, SCARD_IO_HEADER,
  PUCHAR, DWORD, /*@out@*/ PUCHAR, PDWORD, PSCARD_IO_HEADER);
- LONG IFDSetPTS(READER_CONTEXT *, DWORD, UCHAR, UCHAR, UCHAR, UCHAR);
- LONG IFDSetCapabilities(READER_CONTEXT *, DWORD, DWORD, PUCHAR);
- LONG IFDGetCapabilities(READER_CONTEXT *, DWORD, PDWORD, /*@out@*/ PUCHAR);
+ RESPONSECODE IFDSetPTS(READER_CONTEXT *, DWORD, UCHAR, UCHAR, UCHAR, UCHAR);
+ RESPONSECODE IFDSetCapabilities(READER_CONTEXT *, DWORD, DWORD, PUCHAR);
+ RESPONSECODE IFDGetCapabilities(READER_CONTEXT *, DWORD, PDWORD, /*@out@*/ PUCHAR);
 
 #endif /* __ifdwrapper_h__ */