don't log errors when opts table does not exist

This is to be expected on new setups and not an error. Other errors
would be problematic though.

This should be the last commit related to #80

SQLiteDB.php

@@ -8,7 +8,6 @@
 
 namespace dokuwiki\plugin\sqlite;
 
-use dokuwiki\ErrorHandler;
 use dokuwiki\Extension\Event;
 use dokuwiki\Logger;
 
@@ -460,18 +459,20 @@ protected function currentDbVersion()
             $version = $this->getOpt('dbversion', 0);
             return (int)$version;
         } catch (\PDOException $e) {
-            // temporary logging for #80
-            Logger::error(
-                'SQLite: Could not read dbversion from opt table. Should only happen on new plugin install',
-                [
-                    'dbname' => $this->dbname,
-                    'exception' => get_class($e),
-                    'message' => $e->getMessage(),
-                    'code' => $e->getCode(),
-                ],
-                __FILE__,
-                __LINE__
-            );
+            if (!preg_match('/no such table/', $e->getMessage())) {
+                // if this is not a "no such table" error, there is something wrong see #80
+                Logger::error(
+                    'SQLite: Could not read dbversion from opt table due to unexpected error',
+                    [
+                        'dbname' => $this->dbname,
+                        'exception' => get_class($e),
+                        'message' => $e->getMessage(),
+                        'code' => $e->getCode(),
+                    ],
+                    __FILE__,
+                    __LINE__
+                );
+            }
 
             // add the opt table - if this fails too, let the exception bubble up
             $sql = "CREATE TABLE IF NOT EXISTS opts (opt TEXT NOT NULL PRIMARY KEY, val NOT NULL DEFAULT '')";