Update to pathological case in SqliteCacheProvider when two concurren…

…t requests attempt to create tables at nearly the same time. One request will fail and we should now recover fine.

recess/recess/cache/Cache.class.php

@@ -237,6 +237,7 @@ function __construct() {
 		$tries = 0;
 		while($tries < 2) {
 			try {
+				$tries++;
 				$this->setStatement = $this->pdo->prepare('INSERT OR REPLACE INTO cache (key,value,expire) values (:key,:value,:expire)');
 				$this->getStatement = $this->pdo->prepare('SELECT value,expire FROM cache WHERE key = :key');
 				$this->getManyStatement = $this->pdo->prepare('SELECT value,expire,key FROM cache WHERE key LIKE :key');
@@ -247,11 +248,10 @@ function __construct() {
 					$this->pdo->exec('CREATE TABLE "cache" ("key" TEXT PRIMARY KEY  NOT NULL , "value" TEXT NOT NULL , "expire" INTEGER NOT NULL)');
 					$this->pdo->exec('CREATE INDEX "expiration" ON "cache" ("expire" ASC)');
 				} catch(PDOException $e) {
-					if($tries == 1) {
-						die('Could not create cache table');
+					if($tries == 2) {
+						die('Could not create cache table.');
 					}
 					sleep(1);
-					$tries++;
 					continue;
 				}
 			}