[PATCH v4 35/35 NEW] libctf: fix refcount leak in ctf_import

[Nick Alcock]

Calling ctf_import (fp, NULL) to cancel out a pre-existing import leaked
the refcnt increment on the parent, so it could never be freed.

New in v4.

libctf/
	* ctf-open.c (ctf_import): Do not leak a ctf_file_t ref on every
	ctf_import after the first for a given file.
---
 libctf/ctf-open.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/libctf/ctf-open.c b/libctf/ctf-open.c
index 4a95b7f38a5..aedf39086a2 100644
--- a/libctf/ctf-open.c
+++ b/libctf/ctf-open.c
@@ -1778,6 +1778,7 @@ ctf_import (ctf_file_t *fp, ctf_file_t *pfp)
 
   if (fp->ctf_parent != NULL)
     {
+      fp->ctf_parent->ctf_refcnt--;
       ctf_file_close (fp->ctf_parent);
       fp->ctf_parent = NULL;
     }
@@ -1793,6 +1794,7 @@ ctf_import (ctf_file_t *fp, ctf_file_t *pfp)
       fp->ctf_flags |= LCTF_CHILD;
       pfp->ctf_refcnt++;
     }
+
   fp->ctf_parent = pfp;
   return 0;
 }
-- 
2.23.0.239.g28aa4420fd