EXPR_LABEL also indicates non-continuation line

Example:

  [
    1, # this is not continuation line
    2
  ]

lib/irb/ruby-lex.rb

@@ -308,7 +308,7 @@ def process_nesting_level
 
   def check_newline_depth_difference
     depth_difference = 0
-    if @tokens.size >= 2 and @tokens.last[2].end_with?("\n") and @tokens[-2][3].nobits?(Ripper::EXPR_END | Ripper::EXPR_ENDFN | Ripper::EXPR_CMDARG)
+    if @tokens.size >= 2 and @tokens.last[2].end_with?("\n") and @tokens[-2][3].nobits?(Ripper::EXPR_END | Ripper::EXPR_ENDFN | Ripper::EXPR_CMDARG | Ripper::EXPR_LABEL)
       return 1
     end
     @tokens.each_with_index do |t, index|