Remove unnecessary branch

text should always be a string here.  It is created via
input[pos, len], and pos should never be after the end of the
string.  The code above in the unless ch == '=' block assumes it
is a string, and the one place it is reassigned assigns it to the
empty string.

Author: jeremyevans

lib/erubi.rb

@@ -133,7 +133,7 @@ def initialize(input, properties={})
         end
 
         is_bol = rspace
-        add_text(text) if text
+        add_text(text)
         case ch
         when '='
           rspace = nil if tailch && !tailch.empty?