add pack_word() method

git-svn-id: file:///home/svn/framework3/trunk@6045 4d416f70-5f16-0410-b530-b9f4589650da

lib/rex/arch/x86.rb

@@ -331,6 +331,13 @@ module X86
 		sub(val, reg, badchars, true, adjust, bits)
 	end
 
+	#
+	# This method wrappers packing a short integer as a little-endian buffer.
+	#
+	def self.pack_word(num)
+		[num].pack('v')
+	end
+
 	#
 	# This method wrappers packing an integer as a little-endian buffer.
 	#