[Fix #10890] Fix an error for Layout/BlockEndNewline when multi-lineblocks with lambda literals

changelog/fix_fix_an_error_for_layout_block_end_new_line.md

@@ -0,0 +1 @@
+* [#10890](https://github.com/rubocop/rubocop/issue/10890): Fix an error for `Layout/BlockEndNewline` when multi-line blocks with lambda literals. ([@ydah][])

lib/rubocop/cop/layout/block_end_newline.rb

@@ -60,7 +60,8 @@ def message(node)
         end
 
         def last_heredoc_argument(node)
-          return unless (arguments = node&.arguments)
+          return unless node&.send_type?
+          return unless (arguments = node.arguments)
 
           heredoc = arguments.reverse.detect(&:heredoc?)
           return heredoc if heredoc

spec/rubocop/cop/layout/block_end_newline_spec.rb

@@ -41,6 +41,22 @@
     RUBY
   end
 
+
+  it 'registers an offense and corrects when multiline block `}` is not on its own line' \
+    'with lambda literal `->`.' do
+    expect_offense(<<~RUBY)
+      -> {
+        nil }
+            ^ Expression at 2, 7 should be on its own line.
+    RUBY
+
+    expect_correction(<<~RUBY)
+      -> {
+        nil
+      }
+    RUBY
+  end
+
   it 'registers an offense and corrects when `}` of multiline block ' \
      'without processing is not on its own line' do
     expect_offense(<<~RUBY)