Fix ruby warnings.

- lib/rspec/mocks/error_generator.rb:32: warning: assigned but unused variable - expected_args
- lib/rspec/mocks/error_generator.rb:33: warning: assigned but unused variable - actual_args
- lib/rspec/mocks/stub_const.rb:8: warning: shadowing outer local variable - name
- lib/rspec/mocks/stub_const.rb:12: warning: shadowing outer local variable - name
- spec/rspec/mocks/stub_const_spec.rb:60: warning: assigned but unused variable - orig_value
- lib/rspec/mocks/stub_const.rb:233: warning: instance variable @registered_with_mocks_space not initialized


Closes #162.

lib/rspec/mocks/error_generator.rb

@@ -31,7 +31,7 @@ def raise_unexpected_message_args_error(expectation, *args)
       def raise_missing_default_stub_error(expectation,*args)
         expected_args = format_args(*expectation.expected_args)
         actual_args = args.collect {|a| format_args(*a)}.join(", ")
-        __raise "#{intro} received #{expectation.message.inspect} with unexpected arguments\n Please stub a default value first if message might be received with other args as well. \n"
+        __raise "#{intro} received #{expectation.message.inspect} with unexpected arguments\n  expected: #{expected_args}\n       got: #{actual_args}\n Please stub a default value first if message might be received with other args as well. \n"
       end
 
       # @private

lib/rspec/mocks/stub_const.rb

@@ -4,12 +4,12 @@ module Mocks
     # constant stubbing.
     # @api private
     module RecursiveConstMethods
-      def recursive_const_get(name)
-        name.split('::').inject(Object) { |mod, name| mod.const_get name }
+      def recursive_const_get(const_name)
+        const_name.split('::').inject(Object) { |mod, name| mod.const_get name }
       end
 
-      def recursive_const_defined?(name)
-        name.split('::').inject([Object, '']) do |(mod, full_name), name|
+      def recursive_const_defined?(const_name)
+        const_name.split('::').inject([Object, '']) do |(mod, full_name), name|
           yield(full_name, name) if block_given? && !mod.is_a?(Module)
           return false unless mod.const_defined?(name)
           [mod.const_get(name), [mod, name].join('::')]
@@ -230,7 +230,7 @@ def rspec_reset
       #
       # @api private
       def self.ensure_registered_with_mocks_space
-        return if @registered_with_mocks_space
+        return if defined?(@registered_with_mocks_space) && @registered_with_mocks_space
         ::RSpec::Mocks.space.add(self)
         @registered_with_mocks_space = true
       end

spec/rspec/mocks/stub_const_spec.rb

@@ -57,7 +57,6 @@ def change_const_value_to(value)
         end
 
         it 'returns the stubbed value' do
-          orig_value = const
           stub_const(const_name, 7).should eq(7)
         end
       end