applied two of the 3 chunks in #6907, and a similar one

(replace nested 'if' with '&&')
I cannot make sense of the first chunk of the proposed patch,
i think the original is correct.



git-svn-id: https://origsvn.digium.com/svn/asterisk/trunk@20225 65c4cc65-6c06-0410-ace0-fbb531ad65f3

app.c

@@ -739,20 +739,14 @@ int ast_play_and_record(struct ast_channel *chan, const char *playfile, const ch
 	for (x=0;x<fmtcnt;x++) {
 		if (!others[x])
 			break;
-		if (res > 0) {
+		if (res > 0)
-			if (totalsilence)
+			ast_stream_rewind(others[x], totalsilence ? totalsilence-200 : 200);
-				ast_stream_rewind(others[x], totalsilence-200);
-			else
-				ast_stream_rewind(others[x], 200);
-		}
 		ast_truncstream(others[x]);
 		ast_closestream(others[x]);
 	}
-	if (rfmt) {
+	if (rfmt && ast_set_read_format(chan, rfmt)) {
-		if (ast_set_read_format(chan, rfmt)) {
 		ast_log(LOG_WARNING, "Unable to restore format %s to channel '%s'\n", ast_getformatname(rfmt), chan->name);
 	}
-	}
 	if (outmsg > 1) {
 		/* Let them know recording is stopped */
 		if(!ast_streamfile(chan, "auth-thankyou", chan->language))
@@ -982,18 +976,14 @@ int ast_play_and_prepend(struct ast_channel *chan, char *playfile, char *recordf
 			ast_filedelete(prependfile, sfmt[x]);
 		}
 	}
-	if (rfmt) {
+	if (rfmt && ast_set_read_format(chan, rfmt)) {
-		if (ast_set_read_format(chan, rfmt)) {
 		ast_log(LOG_WARNING, "Unable to restore format %s to channel '%s'\n", ast_getformatname(rfmt), chan->name);
 	}
-	}
-	if (outmsg) {
 	if (outmsg > 1) {
 		/* Let them know it worked */
 		ast_streamfile(chan, "auth-thankyou", chan->language);
 		ast_waitstream(chan, "");
 	}	
-	}	
 	return res;
 }