ob-octave: do not echo variables to STDOUT -- Thanks to Eric S Fraga

lisp/ob-octave.el

@@ -103,7 +103,7 @@ end")
   "Return list of octave statements assigning the block's variables"
   (mapcar
    (lambda (pair)
-     (format "%s=%s"
+     (format "%s=%s;"
 	     (car pair)
 	     (org-babel-octave-var-to-octave (cdr pair))))
    (mapcar #'cdr (org-babel-get-header params :var))))