last minute PG fixes

backend.php

@@ -369,7 +369,8 @@
 //			printf("%d %s - %d %s<br>", strtotime($line["last_read"]), $line["last_read"],
 //				strtotime($line["updated"]), $line["updated"]);
 
-			if (strtotime($line["last_read"]) < strtotime($line["updated"]) && 
+			if ($line["last_read"] && $line["updated"] &&			
+				strtotime($line["last_read"]) < strtotime($line["updated"]) && 
 				($line["unread"] == "f" || $line["unread"] == "0")) {
 						  
 				$update_pic = "<img id='FUPDPIC-$id' src=\"images/updated.png\" 

opml.php

@@ -43,9 +43,7 @@
 
 			print "Feed <b>$title</b> ($url)... ";
 
-			if (DB_TYPE == "mysql") {
-				$link = db_connect(DB_HOST, DB_USER, DB_PASS, DB_NAME);	
-			}
+			$link = db_connect(DB_HOST, DB_USER, DB_PASS, DB_NAME);	
 
 			$result = db_query($link, "SELECT id FROM ttrss_feeds WHERE
 				title = '$title' OR feed_url = '$url'");