Revert a part of r67767

it was not necessary for ruby_2_5.


git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/branches/ruby_2_5@67776 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

1 files changed, 0 insertions, 7 deletions

diff --git a/string.c b/string.c
index 1f52f26f83..ed7da23649 100644
--- a/string.c
+++ b/string.c
@@ -1136,13 +1136,6 @@ str_replace_shared_without_enc(VALUE str2, VALUE str)
             root = rb_str_new_frozen(str);
             RSTRING_GETMEM(root, ptr, len);
         }
-        if (!STR_EMBED_P(str2) && !FL_TEST_RAW(str2, STR_SHARED|STR_NOFREE)) {
-            /* TODO: check if str2 is a shared root */
-            char *ptr2 = STR_HEAP_PTR(str2);
-            if (ptr2 != ptr) {
-                ruby_sized_xfree(ptr2, STR_HEAP_SIZE(str2));
-            }
-        }
 	FL_SET(str2, STR_NOEMBED);
 	RSTRING(str2)->as.heap.len = len;
 	RSTRING(str2)->as.heap.ptr = ptr;