Ensure images sent to stories respect media quality settings.

Stories should always use "Standard" quality, not L3 (high quality). This change ensures that we:

1. Always send stories at the appropriate quality
2. Do not corrupt or overwrite pre-existing image attachments
3. Close several streams when done (thanks StrictMode!)

libsignal/service/src/main/java/org/whispersystems/signalservice/api/messages/SignalServiceAttachmentStream.java

@@ -10,13 +10,15 @@ package org.whispersystems.signalservice.api.messages;
 import org.whispersystems.signalservice.internal.push.http.CancelationSignal;
 import org.whispersystems.signalservice.internal.push.http.ResumableUploadSpec;
 
+import java.io.Closeable;
+import java.io.IOException;
 import java.io.InputStream;
 import java.util.Optional;
 
 /**
  * Represents a local SignalServiceAttachment to be sent.
  */
-public class SignalServiceAttachmentStream extends SignalServiceAttachment {
+public class SignalServiceAttachmentStream extends SignalServiceAttachment implements Closeable {
 
   private final InputStream                   inputStream;
   private final long                          length;
@@ -151,4 +153,9 @@ public class SignalServiceAttachmentStream extends SignalServiceAttachment {
   public Optional<ResumableUploadSpec> getResumableUploadSpec() {
     return resumableUploadSpec;
   }
+
+  @Override
+  public void close() throws IOException {
+    inputStream.close();
+  }
 }

libsignal/service/src/main/java/org/whispersystems/signalservice/internal/push/PushServiceSocket.java

@@ -1450,17 +1450,11 @@ public class PushServiceSocket {
       connections.add(call);
     }
 
-    try {
-      Response response;
-
-      try {
-        response = call.execute();
-      } catch (IOException e) {
-        throw new PushNetworkException(e);
-      }
-
+    try (Response response = call.execute()) {
       if (response.isSuccessful()) return file.getTransmittedDigest();
       else                         throw new NonSuccessfulResponseCodeException(response.code(), "Response: " + response);
+    } catch (IOException e) {
+      throw new PushNetworkException(e);
     } finally {
       synchronized (connections) {
         connections.remove(call);