Fix a bug in the Still Image Host Class driver where the returned block status code was being truncated.

Add programming support to the AVRISP project's PDI programming mode; paged memory writes are not currently functional.

LUFA/Drivers/USB/Class/Host/StillImage.c

@@ -233,8 +233,6 @@ static uint8_t SImage_Host_ReceiveBlockHeader(USB_ClassInfo_SI_Host_t* const SII
 		  Pipe_Read_Stream_LE(&PIMAHeader->Params, ParamBytes, NO_STREAM_CALLBACK);
 		
 		Pipe_ClearIN();
-		
-		PIMAHeader->Code &= 0x0000000F;
 	}
 	
 	Pipe_Freeze();