Fixed error in setting None values

svn: r9381

src/gen/lib/date.py

@@ -542,9 +542,18 @@ class Date:
         Sets the year, month, and day values by offset
         """
         dv = list(self.dateval)
+        if dv[Date._POS_YR]:
             dv[Date._POS_YR] += year
+        elif year:
+            dv[Date._POS_YR] = year
+        if dv[Date._POS_MON]:
             dv[Date._POS_MON] += month
+        elif month:
+            dv[Date._POS_MON] = month
+        if dv[Date._POS_DAY]:
             dv[Date._POS_DAY] += day
+        elif day:
+            dv[Date._POS_DAY] = day            
         self.dateval = tuple(dv)
         self._calc_sort_value()
 

src/gen/proxy/living.py

@@ -69,8 +69,11 @@ class LivingProxyDb(ProxyDbBase):
         """
         ProxyDbBase.__init__(self, db)
         self.mode = mode
+        if current_year != None:
             self.current_date = Date()
             self.current_date.set_year(current_year)
+        else:
+            self.current_date = None
         self.years_after_death = years_after_death
 
     def get_person_from_handle(self, handle):