Revert r62617 "compile.c: fix load_from_binary"

It breaks Solaris:
http://rubyci.s3.amazonaws.com/unstable11s/ruby-trunk/log/20180301T012502Z.diff.html.gz

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@62769 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

1 files changed, 1 insertions, 2 deletions

diff --git a/compile.c b/compile.c
index 2c388b8a8c..17974b26c0 100644
--- a/compile.c
+++ b/compile.c
@@ -8773,8 +8773,7 @@ ibf_load_iseq_each(const struct ibf_load *load, rb_iseq_t *iseq, ibf_offset_t of
 		rb_raise(rb_eRuntimeError, "path object size mismatch");
 	    }
 	    path = rb_fstring(RARRAY_AREF(pathobj, 0));
-	    realpath = RARRAY_AREF(pathobj, 1);
-	    if (!NIL_P(realpath)) realpath = rb_fstring(realpath);
+	    realpath = rb_fstring(RARRAY_AREF(pathobj, 1));
 	}
 	else {
 	    rb_raise(rb_eRuntimeError, "unexpected path object");