avoiding extra space if not necessary

Author: weaverryan

src/ScriptExecutor.php

@@ -135,6 +135,6 @@ private function expandPhpScript(string $cmd, array $scriptArguments): string
         $phpArgs = implode(' ', array_map([ProcessExecutor::class, 'escape'], $arguments));
         $scriptArgs = implode(' ', array_map([ProcessExecutor::class, 'escape'], $scriptArguments));
 
-        return ProcessExecutor::escape($php).($phpArgs ? ' '.$phpArgs : '').' '.$cmd.' '.$scriptArgs;
+        return ProcessExecutor::escape($php).($phpArgs ? ' '.$phpArgs : '').' '.$cmd.($scriptArgs ? ' '.$scriptArgs : '');
     }
 }