parser: switch pkg_free(tob) to free_to(tob) to free To header structure

- backport of git commit: dc453ac1e9d631c417b1b9c70d7b9d92107b389f
- explanation in http://sip-router.org/tracker/index.php?do=details&task_id=155
- this is supposed to help easybell with #1301

lib/kcore/parse_pai.c

@@ -66,7 +66,7 @@ int parse_pai_header( struct sip_msg *msg )
 	parse_to(msg->pai->body.s, msg->pai->body.s + msg->pai->body.len+1, pai_b);
 	if (pai_b->error == PARSE_ERROR) {
 		LM_ERR("bad P-Asserted-Identity header\n");
-		pkg_free(pai_b);
+		free_to(pai_b);
 		goto error;
 	}
  	msg->pai->parsed = pai_b;

lib/kcore/parse_ppi.c

@@ -74,7 +74,7 @@ int parse_ppi_header( struct sip_msg *msg )
 	     ppi_b);
     if (ppi_b->error == PARSE_ERROR) {
 	LM_ERR("bad P-Preferred-Identity header\n");
-	pkg_free(ppi_b);
+	free_to(ppi_b);
 	goto error;
     }
  	msg->ppi->parsed = ppi_b;

modules/sanity/sanity.c

@@ -756,7 +756,7 @@ int check_parse_uris(struct sip_msg* _msg, int checks) {
 				LOG(L_WARN, "sanity_check(): check_parse_uris():"
 						" failed to parse From header [%.*s]\n",
 						_msg->from->body.len, _msg->from->body.s);
-				pkg_free(ft_body);
+				free_to(ft_body);
 				if (_msg->REQ_METHOD != METHOD_ACK) {
 					if (slb.zreply(_msg, 400, "Bad From header") < 0) {
 						LOG(L_WARN, "sanity_check(): check_parse_uris():"

modules_k/seas/encode_header.c

@@ -139,7 +139,7 @@ int encode_header(struct sip_msg *sipmsg,struct hdr_field *hdr,unsigned char *pa
 	    parse_to(hdr->body.s,hdr->body.s+hdr->body.len+1,tobody);
 	    if (tobody->error == PARSE_ERROR) {
 	       myerror="bad (REFER,TO,FROM,RPID) header\n";
-	       pkg_free(tobody);
+	       free_to(tobody);
 	       return 5;
 	       goto error;
 	    }

parser/msg_parser.c

@@ -156,7 +156,7 @@ char* get_hdr_field(char* buf, char* end, struct hdr_field* hdr)
 			tmp=parse_cseq(tmp, end, cseq_b);
 			if (cseq_b->error==PARSE_ERROR){
 				LOG(L_ERR, "ERROR: get_hdr_field: bad cseq\n");
-				pkg_free(cseq_b);
+				free_cseq(cseq_b);
 				goto error;
 			}
 			hdr->parsed=cseq_b;
@@ -177,7 +177,7 @@ char* get_hdr_field(char* buf, char* end, struct hdr_field* hdr)
 			tmp=parse_to(tmp, end,to_b);
 			if (to_b->error==PARSE_ERROR){
 				LOG(L_ERR, "ERROR: get_hdr_field: bad to header\n");
-				pkg_free(to_b);
+				free_to(to_b);
 				goto error;
 			}
 			hdr->parsed=to_b;

parser/parse_diversion.c

@@ -69,7 +69,7 @@ int parse_diversion_header(struct sip_msg *msg)
  	parse_to(msg->diversion->body.s, msg->diversion->body.s + msg->diversion->body.len + 1, diversion_b);
  	if (diversion_b->error == PARSE_ERROR) {
  		LOG(L_ERR, "ERROR:parse_diversion_header: bad diversion header\n");
- 		pkg_free(diversion_b);
+ 		free_to(diversion_b);
  		goto error;
  	}
  	msg->diversion->parsed = diversion_b;

parser/parse_from.c

@@ -77,7 +77,7 @@ int parse_from_header( struct sip_msg *msg)
 	parse_to(msg->from->body.s,msg->from->body.s+msg->from->body.len+1,from_b);
 	if (from_b->error == PARSE_ERROR) {
 		LOG(L_ERR, "ERROR:parse_from_header: bad from header\n");
-		pkg_free(from_b);
+		free_to(from_b);
 		goto error;
 	}
 	msg->from->parsed = from_b;

parser/parse_refer_to.c

@@ -69,7 +69,7 @@ int parse_refer_to_header( struct sip_msg *msg )
 		 refer_to_b);
  	if (refer_to_b->error == PARSE_ERROR) {
  		LOG(L_ERR, "ERROR:parse_refer_to_header: bad Refer-To header\n");
- 		pkg_free(refer_to_b);
+ 		free_to(refer_to_b);
  		goto error;
  	}
  	msg->refer_to->parsed = refer_to_b;

parser/parse_rpid.c

@@ -66,7 +66,7 @@ int parse_rpid_header( struct sip_msg *msg )
  	parse_to(msg->rpid->body.s,msg->rpid->body.s+msg->rpid->body.len+1,rpid_b);
  	if (rpid_b->error == PARSE_ERROR) {
  		LOG(L_ERR, "ERROR:parse_rpid_header: bad rpid header\n");
- 		pkg_free(rpid_b);
+ 		free_to(rpid_b);
  		goto error;
  	}
  	msg->rpid->parsed = rpid_b;