Fix Rubocop warnings

Author: andrykonchin

core/proc/parameters_spec.rb

@@ -194,6 +194,6 @@
   end
 
   it "regards a destructured parameter in lambda as an required" do
-    -> ((a)) { }.parameters.should == [[:req]]
+    -> ((a)) { }.parameters.should == [[:req]] # rubocop:disable Style/StabbyLambdaParentheses
   end
 end

language/it_parameter_spec.rb

@@ -85,13 +85,13 @@ def o.it
     it "does not affect binding local variables" do
       -> { it; binding.local_variables }.call("a").should == []
     end
-    
+
     it "does not affect binding local variables getting" do
       proc {
         a = it; binding.local_variable_get(:it)
       }.should.raise(NameError, /local variable 'it' is not defined for/)
     end
-    
+
     it "does not affect binding local variables setting" do
       -> {
        a = it

shared/kernel/fixtures/classes.rb

@@ -6,4 +6,4 @@ def self.with_raise
       end
     end
   end
-end
+end