fixes brittle chain initialization spec

spec/models/cost_query/chaining_spec.rb

@@ -22,6 +22,10 @@ describe CostQuery do
       CostQuery.chain_initializer.clear
     end
 
+    after(:all) do
+      CostQuery.chain_initializer.clear
+    end
+
     it "should contain NoFilter" do
       @query.chain.should be_a(CostQuery::Filter::NoFilter)
     end

spec/models/cost_query/filter_spec.rb

@@ -106,7 +106,7 @@ describe CostQuery do
         @query.filter "author_id", :value => object.id
         @query.result.count.should == Entry.all.select { |i| i.issue and i.issue.author == object }.count
       end
-    end\
+    end
 
     it "filters spent_on" do
       @query.filter :spent_on, :operator=> 'w'