From: Antonio Terceiro <terceiro@debian.org>
Date: Sat, 3 Dec 2016 16:04:48 -0200
Subject: gemspec: fix error when loading

Trying to load the gemspec the way it is produces this:

$ gem build .
ERROR:  Error loading gemspec. Aborting.
$ ruby -e 'Gem::Specification.load("rmagick.gemspec")'
Invalid gemspec in [rmagick.gemspec]: undefined method `v' for Gem::Specification:Class
---
 rmagick.gemspec | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/rmagick.gemspec b/rmagick.gemspec
index f179839..d8d7f2d 100644
--- a/rmagick.gemspec
+++ b/rmagick.gemspec
@@ -2,8 +2,10 @@ require 'date'
 require 'English'
 require './lib/rmagick/version'
 
-def v(version)
-  Gem::Version.new(version)
+class << Gem::Specification
+  def v(version)
+    Gem::Version.new(version)
+  end
 end
 
 RUBY     = v(RUBY_VERSION.dup)