Handle it local variable read

Author: kddnewton

lib/syntax_tree/prism.rb

@@ -418,7 +418,7 @@ def visit_block_node(node)
           if_break { visit_block_node_break(node, break_opening, break_closing) }.if_flat do
             text(flat_opening)
 
-            if parameters.is_a?(ParametersNode)
+            if parameters.is_a?(BlockParametersNode)
               text(" ")
               visit(parameters)
             end
@@ -1947,6 +1947,12 @@ def visit_interpolated_x_string_node(node)
       end
     end
 
+    # it
+    # ^^
+    def visit_it_local_variable_read_node(node)
+      text("it")
+    end
+
     # foo(bar: baz)
     #     ^^^^^^^^
     def visit_keyword_hash_node(node)