Respond to CR.

// FREEBIE

Signal/src/Models/TSMessageAdapaters/AttachmentUploadView.m

@@ -109,9 +109,10 @@ NS_ASSUME_NONNULL_BEGIN
     NSString *attachmentID = [userinfo objectForKey:kAttachmentUploadAttachmentIDKey];
     if ([self.attachment.uniqueId isEqualToString:attachmentID]) {
         if (!isnan(progress)) {
-            [_progressView setProgress:(float)progress];
+            [_progressView setProgress:progress];
             self.isAttachmentReady = self.attachment.isUploaded;
         } else {
+            OWSAssert(0);
             self.isAttachmentReady = YES;
         }
     }

Signal/src/views/OWSProgressView.h

@@ -2,13 +2,15 @@
 //  Copyright (c) 2017 Open Whisper Systems. All rights reserved.
 //
 
-#pragma once
-
 #import <UIKit/UIKit.h>
 
+NS_ASSUME_NONNULL_BEGIN
+
 @interface OWSProgressView : UIView
 
 @property (nonatomic) UIColor *color;
 @property (nonatomic) CGFloat progress;
 
 @end
+
+NS_ASSUME_NONNULL_END

Signal/src/views/OWSProgressView.m

@@ -4,6 +4,8 @@
 
 #import "OWSProgressView.h"
 
+NS_ASSUME_NONNULL_BEGIN
+
 @interface OWSProgressView ()
 
 @property (nonatomic) CAShapeLayer *borderLayer;
@@ -118,3 +120,5 @@
 }
 
 @end
+
+NS_ASSUME_NONNULL_END