Index: channel.c
===================================================================
--- channel.c	(revision 27301)
+++ channel.c	(working copy)
@@ -1954,6 +1954,7 @@
 	} else if ((f->frametype == AST_FRAME_CONTROL) && (f->subclass == AST_CONTROL_ANSWER)) {
 		if (prestate == AST_STATE_UP) {
 			ast_log(LOG_DEBUG, "Dropping duplicate answer!\n");
+			ast_frfree(f);
 			f = &null_frame;
 		}
 		/* Answer the CDR */