inline_parser.ry in rdoc-6.0.0.beta4

- old
+ new

@@ -434,10 +434,10 @@
 # Parses the +inline+ text from RD format into RDoc format.
 
 def parse inline
   @inline = inline
   @src = StringScanner.new inline
-  @pre = ""
+  @pre = "".dup
   @yydebug = true
   do_parse.to_s
 end
 
 ##