EmissionSystemBeamRecord.serialize incorrectly contains outputStream read calls instead of write

[Jason McKinney]

open-dis-python/opendis/dis7.py

Lines 5350 to 5359 in b640fa3

 def serialize(self, outputStream): 
     outputStream.read_unsigned_byte(self.beamDataLength); 
     outputStream.read_unsigned_byte(self.beamIDNumber); 
     outputStream.read_unsigned_short(self.beamParameterIndex); 
     self.fundamentalParameterData.serialize(outputStream); 
     outputStream.read_unsigned_byte(self.beamFunction); 
     outputStream.read_unsigned_byte(self.numberOfTargetsInTrackJam); 
     outputStream.read_unsigned_byte(self.highDensityTrackJam); 
     outputStream.read_unsigned_byte(0); # 8 bit padding 
     outputStream.read_unsigned_int(self.jammingModeSequence); 

EmissionSystemBeamRecord's serialize function implementation is incorrectly attempting to call outputStream.read_unsigned_byte and outputStream.read_unsigned_short, which do not exist, and should be writes.

The read calls need to be replaced with the correct write calls: outputStream.write_unsigned_byte and outputStream.write_unsigned_short