GH1278: Removed error code for alerts

Commit aea145e removed some error codes that are generated
algorithmically: mapping alerts to error texts.  Found by
Andreas Karlsson.  This restores them, and adds two missing ones.

Reviewed-by: Matt Caswell <matt@openssl.org>

util/find-unused-errs

diff --git a/util/find-unused-errs b/util/find-unused-errs
index d36789e..68cf66b 100755
--- a/util/find-unused-errs
+++ b/util/find-unused-errs
@@ -21,6 +21,10 @@
     git grep -l --full-name -F $F >$X2
     NUM=`wc -l <$X2`
     test $NUM -gt 2 && continue
+    if grep -q $F crypto/err/openssl.ec ; then
+        echo Possibly unused $F found in openssl.ec
+        continue
+    fi
     echo $F
     for FILE in `cat $X2` ; do
         grep -v -w $F <$FILE >$FILE.new