lint fixes

app/models/case_log.rb

@@ -105,8 +105,8 @@ private
       dynamically_not_required << "other_reason_for_leaving_last_settled_home"
     end
 
-    if net_income.to_i == 0
-     dynamically_not_required << "net_income_frequency" 
+    if net_income.to_i.zero?
+      dynamically_not_required << "net_income_frequency"
     end
 
     required.delete_if { |key, _value| dynamically_not_required.include?(key) }