TBR: fix: remove the invalid argument warnings

Change-Id: I05f94de5dfbf88c20881d73ca2d1996bf00d3fd4
diff --git a/madb.go b/madb.go
index 50f797b..05572cc 100644
--- a/madb.go
+++ b/madb.go
@@ -598,7 +598,7 @@
 	// Write the init script in a temp file.
 	initScript := sh.MakeTempFile()
 	initScript.WriteString(gradleInitScript)
-	initScript.Close()
+	initScript.Sync()
 
 	// Create a temporary file in which Gradle can write the results.
 	outputFile := sh.MakeTempFile()