push leak ressource fix

services/lambda/src/it/java/software/amazon/awssdk/services/lambda/IntegrationTestBase.java

@@ -90,25 +90,32 @@ public static void tearDown() {
         }
     }
 
-    private static File setupFunctionZip(String jsFile) throws IOException {
-        InputStream in = IntegrationTestBase.class.getResourceAsStream(jsFile);
 
-        File zipFile = File.createTempFile("lambda-cloud-function", ".zip");
-        ZipOutputStream out = new ZipOutputStream(new FileOutputStream(zipFile));
+    private static File setupFunctionZip(String jsFile) throws IOException {
+        try (InputStream in = IntegrationTestBase.class.getResourceAsStream(jsFile)) {
 
-        out.putNextEntry(new ZipEntry(jsFile));
+            File zipFile = File.createTempFile("lambda-cloud-function", ".zip");
+            try(ZipOutputStream out = new ZipOutputStream(new FileOutputStream(zipFile))) {
 
-        byte[] b = new byte[1024];
-        int count;
+                out.putNextEntry(new ZipEntry(jsFile));
 
-        while ((count = in.read(b)) != -1) {
-            out.write(b, 0, count);
-        }
+                byte[] b = new byte[1024];
+                int count;
 
-        out.close();
-        in.close();
+                while ((count = in.read(b)) != -1) {
+                    out.write(b, 0, count);
+                }
 
-        return zipFile;
+                out.close();
+                in.close();
+                return zipFile;
+            } catch(IOException e) {
+                throw new UncheckedIOException(e);
+            }
+        }
+        catch(IOException e) {
+            throw new UncheckedIOException(e);
+        }
     }
 
     private static void createLambdaServiceRole() {