[ticket/15311] Detail errors a little more

PHPBB3-15311

phpBB/includes/acp/acp_database.php

@@ -335,7 +335,7 @@ class acp_database
 								}
 								catch (\phpbb\storage\exception\exception $e)
 								{
-
+									// If open fails, just finish
 								}
 
 								flush();
@@ -360,8 +360,7 @@ class acp_database
 							}
 							catch (\phpbb\storage\exception\exception $e)
 							{
-								// Error while copying file from storage to temp
-								exit;
+								trigger_error($user->lang['RESTORE_DOWNLOAD_FAIL'] . adm_back_link($this->u_action));
 							}
 
 							switch ($matches[1])

phpBB/language/en/acp/database.php

@@ -59,6 +59,7 @@ $lang = array_merge($lang, array(
 	'FILE_WRITE_FAIL'	=> 'Unable to write file to storage folder.',
 	'FULL_BACKUP'		=> 'Full',
 
+	'RESTORE_DOWNLOAD_FAIL'	=> 'Error while copying file from storage to local temporary folder.',
 	'RESTORE_FAILURE'		=> 'The backup file may be corrupt.',
 	'RESTORE_OPTIONS'		=> 'Restore options',
 	'RESTORE_SELECTED_BACKUP'	=> 'Are you sure you want to restore the selected backup?',