Refs #4867 - Changed ExpCorr call in C2E to be multiply.

When "Detailed Balance" is checked on the Energy Transfer tab of the Convert
to Energy interface, an exponential correction is made to the workspace(s)
during reduction.  This correction had been previously been set to use the default, "Divide".  Changed to specify "Multiply" instead.

Code/Mantid/scripts/Inelastic/inelastic_indirect_reduction_steps.py

@@ -689,7 +689,7 @@ def execute(self, reducer, file_ws):
             workspaces = [file_ws]
 
         for ws in workspaces:
-            ExponentialCorrection(ws, ws, 1.0, correction)
+            ExponentialCorrection(ws, ws, 1.0, correction)#, Operation="Multiply")
 
     def set_temperature(self, temp):
         self._temp = temp