Fixed ticket #104: pjsip_ctype_hdr_clone() doesn't duplicate media subtype

git-svn-id: https://svn.pjsip.org/repos/pjproject/trunk@952 74dad513-b988-da41-8d7b-12977e46ad98
diff --git a/pjsip/src/pjsip/sip_msg.c b/pjsip/src/pjsip/sip_msg.c
index 1e4c572..e2ed20d 100644
--- a/pjsip/src/pjsip/sip_msg.c
+++ b/pjsip/src/pjsip/sip_msg.c
@@ -1181,6 +1181,7 @@
 {
     pjsip_ctype_hdr *hdr = pjsip_ctype_hdr_create(pool);
     pj_strdup(pool, &hdr->media.type, &rhs->media.type);
+    pj_strdup(pool, &hdr->media.subtype, &rhs->media.subtype);
     pj_strdup(pool, &hdr->media.param, &rhs->media.param);
     return hdr;
 }