New function: smb_freemsghdrmem() frees just the variable-length header fields

(i.e. not the data fields). smb_freemsgmem() still frees both.

src/smblib/smblib.c

@@ -875,16 +875,12 @@ int SMBCALL smb_getmsghdr(smb_t* smb, smbmsg_t* msg)
 }
 
 /****************************************************************************/
-/* Frees memory allocated for 'msg'                                         */
+/* Frees memory allocated for variable-length header fields in 'msg'        */
 /****************************************************************************/
-void SMBCALL smb_freemsgmem(smbmsg_t* msg)
+void SMBCALL smb_freemsghdrmem(smbmsg_t* msg)
 {
 	ushort	i;
 
-	if(msg->dfield) {
-		FREE(msg->dfield);
-		msg->dfield=NULL;
-	}
 	for(i=0;i<msg->total_hfields;i++)
 		if(msg->hfield_dat[i]) {
 			FREE(msg->hfield_dat[i]);
@@ -901,6 +897,19 @@ void SMBCALL smb_freemsgmem(smbmsg_t* msg)
 	}
 }
 
+/****************************************************************************/
+/* Frees memory allocated for 'msg'                                         */
+/****************************************************************************/
+void SMBCALL smb_freemsgmem(smbmsg_t* msg)
+{
+	if(msg->dfield) {
+		FREE(msg->dfield);
+		msg->dfield=NULL;
+	}
+	msg->hdr.total_dfields=0;
+	smb_freemsghdrmem(msg);
+}
+
 /****************************************************************************/
 /* Copies memory allocated for 'srcmsg' to 'msg'							*/
 /****************************************************************************/

src/smblib/smblib.h

@@ -121,6 +121,7 @@ SMBEXPORT int 	SMBCALL smb_putmsg(smb_t* smb, smbmsg_t* msg);
 SMBEXPORT int 	SMBCALL smb_putmsgidx(smb_t* smb, smbmsg_t* msg);
 SMBEXPORT int 	SMBCALL smb_putmsghdr(smb_t* smb, smbmsg_t* msg);
 SMBEXPORT void	SMBCALL smb_freemsgmem(smbmsg_t* msg);
+SMBEXPORT void	SMBCALL smb_freemsghdrmem(smbmsg_t* msg);
 SMBEXPORT ulong	SMBCALL smb_hdrblocks(ulong length);
 SMBEXPORT ulong	SMBCALL smb_datblocks(ulong length);
 SMBEXPORT long	SMBCALL smb_allochdr(smb_t* smb, ulong length);