Fix a dependency for etc.o.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@45988 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
2014-05-18 03:04:07 +00:00 · 2014-05-18 03:04:07 +00:00 · db1d53450e
--- a/ext/etc/depend
+++ b/ext/etc/depend
@ -1,4 +1,5 @@
 etc.o : etc.c constdefs.h $(HDRS) $(ruby_headers) \
+  $(hdrdir)/ruby/io.h \
  $(hdrdir)/ruby/encoding.h \
  $(hdrdir)/ruby/oniguruma.h