Fix system test

Generator for callback plugin now checks for existence of ignore plugin
to know what code to generate

lib/cmock_generator_plugin_callback.rb

@@ -79,9 +79,12 @@ class CMockGeneratorPluginCallback
 
   def mock_interfaces(function)
     func_name = function[:name]
-    "void #{func_name}_StubWithCallback(CMOCK_#{func_name}_CALLBACK Callback)\n{\n" +
-    "  Mock.#{func_name}_IgnoreBool = (int)0;\n" +
-    "  Mock.#{func_name}_CallbackFunctionPointer = Callback;\n}\n\n"
+    lines = ""
+    lines << "void #{func_name}_StubWithCallback(CMOCK_#{func_name}_CALLBACK Callback)\n{\n"
+    if @config.plugins.include? :ignore
+      lines << "  Mock.#{func_name}_IgnoreBool = (int)0;\n"
+    end
+    lines << "  Mock.#{func_name}_CallbackFunctionPointer = Callback;\n}\n\n"
   end
 
   def mock_destroy(function)

test/unit/cmock_generator_plugin_callback_test.rb

@@ -14,6 +14,7 @@ describe CMockGeneratorPluginCallback, "Verify CMockGeneratorPluginCallback Modu
 
     @config.expect :callback_include_count, true
     @config.expect :callback_after_arg_check, false
+    @config.expect :plugins, [:ignore]
 
     @cmock_generator_plugin_callback = CMockGeneratorPluginCallback.new(@config, @utils)
   end