Add another sanity check in the AGI read loop. We really don't care about

EAGAIN unless we didn't read an entire line.  If there is a newline at the
end if the read buffer, break, because we got the whole thing.
(reported and patched by bmd)


git-svn-id: https://origsvn.digium.com/svn/asterisk/branches/1.4@84236 65c4cc65-6c06-0410-ace0-fbb531ad65f3

res/res_agi.c

@@ -1884,6 +1884,8 @@ static enum agi_result run_agi(struct ast_channel *chan, char *request, AGI *agi
 				if (res != NULL && !agi->fast)
 					break;
 				buflen = strlen(buf);
+				if (buflen && buf[buflen - 1] == '\n')
+					break;
 				len -= buflen;
 				if (agidebug)
 					ast_verbose( "AGI Rx << temp buffer %s - errno %s\n", buf, strerror(errno));