Another MB to MiB

src/Composer/IO/ConsoleIO.php

@@ -153,7 +153,7 @@ class ConsoleIO extends BaseIO
             $memoryUsage = memory_get_usage() / 1024 / 1024;
             $timeSpent = microtime(true) - $this->startTime;
             $messages = array_map(function ($message) use ($memoryUsage, $timeSpent) {
-                return sprintf('[%.1fMB/%.2fs] %s', $memoryUsage, $timeSpent, $message);
+                return sprintf('[%.1fMiB/%.2fs] %s', $memoryUsage, $timeSpent, $message);
             }, (array) $messages);
         }