Fix Windows warning

../pcsc_scan.c: In function 'pcsc_stringify_error':
../pcsc_scan.c:67:63: warning: format '%X' expects argument of type 'unsigned int', but argument 4 has type 'DWORD' {aka 'long unsigned int'} [-Wformat=]
   67 |                 snprintf(buffer, sizeof(buffer), "ERROR: 0x%08X\n", rv);
      |                                                            ~~~^     ~~
      |                                                               |     |
      |                                                               |     DWORD {aka long unsigned int}
      |                                                               unsigned int
      |                                                            %08lX

pcsc_scan.c

@@ -64,7 +64,7 @@ const char *pcsc_stringify_error(DWORD rv)
 		NULL))
 	{
 		/* if FormatMessage() failed */
-		snprintf(buffer, sizeof(buffer), "ERROR: 0x%08X\n", rv);
+		snprintf(buffer, sizeof(buffer), "ERROR: 0x%08lX\n", rv);
 	}
 
 	return buffer;