fixup in solvation test

Author: davidfarinajr

rmgpy/data/solvation.py

@@ -793,8 +793,8 @@ def transform_lone_pairs(self, molecule):
                         atom.increment_radical()
                         added_to_pairs[atom] += 1
 
+        saturated_struct.update_charge() # we need to update charges before updating lone pairs
         saturated_struct.update()
-        saturated_struct.update_lone_pairs()
 
         return saturated_struct, added_to_pairs