fix chain call for ruby 1.8

Author: valich

lib/ruby-debug-ide/command.rb

@@ -66,8 +66,8 @@ def options
       end
 
       def unescape_incoming(str)
-        str.gsub(/((?:^|[^\\])(?:\\\\)*)\\n/, "\\1\n")
-            .gsub(/\\\\/, '\\')
+        str.gsub(/((?:^|[^\\])(?:\\\\)*)\\n/, "\\1\n").
+            gsub(/\\\\/, '\\')
       end
     end