Index: apps/app_externalivr.c
===================================================================
--- apps/app_externalivr.c	(revision 309251)
+++ apps/app_externalivr.c	(working copy)
@@ -162,6 +162,7 @@
 
 	fprintf(handle, "%s\n", ast_str_buffer(tmp));
 	ast_debug(1, "sent '%s'\n", ast_str_buffer(tmp));
+	ast_free(tmp);
 }
 
 static void *gen_alloc(struct ast_channel *chan, void *params)