Use appropriate type for requested format in chan_local.

We were passing and storing the requested format as an int instead of format_t
resulting in truncation.

(closes issue #18238)
Reported by: whizemen
Patches:
      0018238_speex16.patch uploaded by whizemen (license 1143)


git-svn-id: https://origsvn.digium.com/svn/asterisk/branches/1.8@302412 65c4cc65-6c06-0410-ace0-fbb531ad65f3

channels/chan_local.c

@@ -141,7 +141,7 @@ struct local_pvt {
 	unsigned int flags;                     /*!< Private flags */
 	char context[AST_MAX_CONTEXT];		/*!< Context to call */
 	char exten[AST_MAX_EXTENSION];		/*!< Extension to call */
-	int reqformat;				/*!< Requested format */
+	format_t reqformat;				/*!< Requested format */
 	struct ast_jb_conf jb_conf;		/*!< jitterbuffer configuration for this local channel */
 	struct ast_channel *owner;		/*!< Master Channel - Bridging happens here */
 	struct ast_channel *chan;		/*!< Outbound channel - PBX is run here */
@@ -955,7 +955,7 @@ static int local_hangup(struct ast_channel *ast)
 }
 
 /*! \brief Create a call structure */
-static struct local_pvt *local_alloc(const char *data, int format)
+static struct local_pvt *local_alloc(const char *data, format_t format)
 {
 	struct local_pvt *tmp = NULL;
 	char *c = NULL, *opts = NULL;