Related: rhbz#1602589 null_check 'guiRow'

Change-Id: I0c93e6a721646363e5b71ec0e9db6199e7cce006
Reviewed-on: https://gerrit.libreoffice.org/57641
Tested-by: Jenkins
Reviewed-by: Caolán McNamara <caolanm@redhat.com>
Tested-by: Caolán McNamara <caolanm@redhat.com>

wizards/com/sun/star/wizards/agenda/TopicsControl.py

@@ -458,8 +458,9 @@ class TopicsControl(ControlScroller):
 
     def rowDown(self, guiRow=None, control=None):
         try:
-            if guiRow is None and control is None:
+            if guiRow is None:
                 guiRow = self.lastFocusRow - self.nscrollvalue
+            if control is None:
                 control = self.lastFocusControl
             # only perform if this is not the last row.
             actuallRow = guiRow + self.nscrollvalue
@@ -490,8 +491,9 @@ class TopicsControl(ControlScroller):
 
     def rowUp(self, guiRow=None, control=None):
         try:
-            if guiRow is None and control is None:
+            if guiRow is None:
                 guiRow = self.lastFocusRow - self.nscrollvalue
+            if control is None:
                 control = self.lastFocusControl
             # only perform if this is not the first row
             actuallRow = guiRow + self.nscrollvalue