Merge pull request #3778 from edhgoose/patch-1

Fix reference to getIO as per #3777

src/Composer/Console/Application.php

@@ -151,7 +151,7 @@ class Application extends BaseApplication
         }
 
         if (isset($startTime)) {
-            $this->getIO->writeError('<info>Memory usage: '.round(memory_get_usage() / 1024 / 1024, 2).'MB (peak: '.round(memory_get_peak_usage() / 1024 / 1024, 2).'MB), time: '.round(microtime(true) - $startTime, 2).'s');
+            $this->getIO()->writeError('<info>Memory usage: '.round(memory_get_usage() / 1024 / 1024, 2).'MB (peak: '.round(memory_get_peak_usage() / 1024 / 1024, 2).'MB), time: '.round(microtime(true) - $startTime, 2).'s');
         }
 
         return $result;