Merge pull request #2248 from mame/fix-for-strict_unused_block

Prevent a warning: the block passed to 'map_type_name' .. may be ignored

Author: soutaro

lib/rbs/types.rb

@@ -15,7 +15,7 @@ def sub(s)
     end
 
     module NoTypeName
-      def map_type_name
+      def map_type_name(&)
         self
       end
     end
@@ -229,7 +229,7 @@ def to_s(level = 0)
 
       include EmptyEachType
 
-      def map_type_name
+      def map_type_name(&)
         ClassSingleton.new(
           name: yield(name, location, self),
           location: location