Avoid calling line_number on String node when rescuing a render error.

lib/liquid/block_body.rb

@@ -93,10 +93,11 @@ module Liquid
         rescue MemoryError => e
           raise e
         rescue UndefinedVariable, UndefinedDropMethod, UndefinedFilter => e
-          context.handle_error(e, token.line_number, token.raw)
+          context.handle_error(e, token.line_number)
           output << nil
         rescue ::StandardError => e
-          output << context.handle_error(e, token.line_number, token.raw)
+          line_number = token.is_a?(String) ? nil : token.line_number
+          output << context.handle_error(e, line_number)
         end
       end
 

lib/liquid/context.rb

@@ -74,7 +74,7 @@ module Liquid
       @interrupts.pop
     end
 
-    def handle_error(e, line_number = nil, raw_token = nil)
+    def handle_error(e, line_number = nil)
       e = internal_error unless e.is_a?(Liquid::Error)
       e.template_name ||= template_name
       e.line_number ||= line_number