help: tweak structure/formatting.

Library/Homebrew/help.rb

@@ -93,11 +93,13 @@ module Homebrew
         nil
       end
 
+      # Otherwise read #: lines from the file.
       help_lines = command_help_lines(path)
-      if help_lines.empty?
+      if help_lines.blank?
         opoo "No help text in: #{path}" if ARGV.homebrew_developer?
-        HOMEBREW_HELP
-      else
+        return HOMEBREW_HELP
+      end
+
       Formatter.wrap(help_lines.join.gsub(/^  /, ""), COMMAND_DESC_WIDTH)
                .sub("@hide_from_man_page ", "")
                .sub(/^\* /, "#{Tty.bold}Usage: brew#{Tty.reset} ")
@@ -108,4 +110,3 @@ module Homebrew
     end
   end
 end
-end