Fix speech structure leak in the AGI speech recognition integration.

The AGI dialplan applications did not destroy the speech structure automatically
if it was not destroyed by the running AGI script. They will now do this.

(issue LUMENVOX-15) 


git-svn-id: https://origsvn.digium.com/svn/asterisk/trunk@184673 65c4cc65-6c06-0410-ace0-fbb531ad65f3

res/res_agi.c

@@ -737,6 +737,10 @@ static enum agi_result launch_asyncagi(struct ast_channel *chan, char *argv[], i
 			ast_frfree(f);
 		}
 	}
+
+	if (async_agi.speech) {
+		ast_speech_destroy(async_agi.speech);
+	}
 quit:
 	/* notify manager users this channel cannot be
 	   controlled anymore by Async AGI */
@@ -2929,6 +2933,9 @@ static enum agi_result run_agi(struct ast_channel *chan, char *request, AGI *agi
 			}
 		}
 	}
+	if (agi->speech) {
+		ast_speech_destroy(agi->speech);
+	}
 	/* Notify process */
 	if (send_sighup) {
 		if (pid > -1) {