libctf: Return CTF_ERR in ctf_type_resolve_unsliced PR 30836

In commit 998a4f589d, all but one return
statement was updated to return the error proper value. This commit
rectifies that missed return statement.

libctf/
	ctf-types.c (ctf_type_resolve_unsliced): Return CTF_ERR on error.

Signed-off-by: Torbjörn SVENSSON <torbjorn.svensson@foss.st.com>

libctf/ctf-types.c

@@ -602,7 +602,7 @@ ctf_type_resolve_unsliced (ctf_dict_t *fp, ctf_id_t type)
   const ctf_type_t *tp;
 
   if ((type = ctf_type_resolve (fp, type)) == CTF_ERR)
-    return -1;
+    return CTF_ERR;
 
   if ((tp = ctf_lookup_by_id (&fp, type)) == NULL)
     return CTF_ERR;		/* errno is set for us.  */