* pack.c: fix typo.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@36970 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

pack.c

@@ -1731,7 +1731,7 @@ pack_unpack(VALUE str, VALUE fmt)
 
               default:
                 if (integer_size > MAX_INTEGER_PACK_SIZE)
-                    rb_bug("unexpected intger size for pack: %d", integer_size);
+                    rb_bug("unexpected integer size for pack: %d", integer_size);
                 PACK_LENGTH_ADJUST_SIZE(integer_size);
                 while (len-- > 0) {
                     union {