[-] Installer: clear the database when an error occured during the install

install-dev/controllers/http/process.php

@@ -105,7 +105,10 @@ class InstallControllerHttpProcess extends InstallControllerHttp
 			// With no parameters, we consider that we are doing a new install, so session where the last process step
 			// was stored can be cleaned
 			if (Tools::getValue('restart'))
+			{
 				$this->session->process_validated = array();
+				$this->session->database_clear = true;
+			}
 			elseif (!Tools::getValue('submitNext'))
 			{
 				$this->session->step = 'configure';