Revert 12369 since inserting NULL is the same as deleting in sqlite3

git-svn-id: http://svn.freeswitch.org/svn/freeswitch/trunk@12373 d0543943-73ff-0310-b7d9-9358b9ac24b2

src/include/switch_channel.h

@@ -409,14 +409,6 @@ SWITCH_DECLARE(switch_status_t) switch_channel_set_private(switch_channel_t *cha
 */
 SWITCH_DECLARE(void *) switch_channel_get_private(switch_channel_t *channel, const char *key);
 
-/*!
-  \brief Unsets private from a given channel
-  \param channel channel to unsets data from
-  \param key your private data's unique keyname 
-  \return void SWITCH_STATUS_SUCCESS if data was unset
-*/
-SWITCH_DECLARE(switch_status_t) switch_channel_unset_private(switch_channel_t *channel, const char *key);
-
 /*!
   \brief Assign a name to a given channel
   \param channel channel to assign name to

src/switch_channel.c

@@ -565,18 +565,6 @@ SWITCH_DECLARE(switch_status_t) switch_channel_set_private(switch_channel_t *cha
 	return SWITCH_STATUS_SUCCESS;
 }
 
-SWITCH_DECLARE(switch_status_t) switch_channel_unset_private(switch_channel_t *channel, const char *key)
-{
-	switch_status_t status;
-	switch_assert(channel != NULL);
-	
-	switch_mutex_lock(channel->profile_mutex);
-	status = switch_core_hash_delete(channel->private_hash, key);
-	switch_mutex_unlock(channel->profile_mutex);
-	
-	return status;
-}
-
 SWITCH_DECLARE(void *) switch_channel_get_private(switch_channel_t *channel, const char *key)
 {
 	void *val;

src/switch_ivr_async.c

@@ -188,7 +188,7 @@ static switch_bool_t write_displace_callback(switch_media_bug_t *bug, void *user
 			switch_core_file_close(&dh->fh);
 
 			if (session && (channel = switch_core_session_get_channel(session))) {
-				switch_channel_unset_private(channel, dh->file);
+				switch_channel_set_private(channel, dh->file, NULL);
 			}
 		}
 		break;
@@ -269,7 +269,7 @@ static switch_bool_t read_displace_callback(switch_media_bug_t *bug, void *user_
 			switch_core_file_close(&dh->fh);
 
 			if (session && (channel = switch_core_session_get_channel(session))) {
-				switch_channel_unset_private(channel, dh->file);
+				switch_channel_set_private(channel, dh->file, NULL);
 			}
 		}
 		break;