[ck2cti] Fixed parsing duplicate reactions with explicit reverse rate constants

Cherry-pick of r2066.

interfaces/python/ck2cti.py

@@ -982,6 +982,7 @@ def readKineticsEntry(entry, speciesDict, energyUnits, moleculeUnits):
         pdepArrhenius = None
         efficiencies = {}
         chebyshevCoeffs = []
+        revReaction = None
 
         # Note that the subsequent lines could be in any order
         for line in lines[1:]:
@@ -1097,6 +1098,9 @@ def readKineticsEntry(entry, speciesDict, energyUnits, moleculeUnits):
                 for collider, efficiency in zip(tokens[0::2], tokens[1::2]):
                     efficiencies[collider.strip()] = float(efficiency.strip())
 
+        if revReaction:
+            revReaction.duplicate = reaction.duplicate
+
         # Decide which kinetics to keep and store them on the reaction object
         # Only one of these should be true at a time!
         if chebyshev is not None: