Merge pull request #113 from akovalenko/uv

Fix typo (ev-errno => uv-errno)

util.lisp

@@ -336,7 +336,7 @@
 
 (defun error-str (uv-errno)
   "Given a libuv error number, return the error string."
-  (if (find ev-errno '(102400 537661987))
+  (if (find uv-errno '(102400 537661987))
       "(unknown error)"
       (uv:uv-err-name uv-errno)))