Fix profile picture handling

SessionMessagingKit/File Server/FileServerAPIV2.swift

@@ -88,8 +88,9 @@ public final class FileServerAPIV2 : NSObject {
     }
     
     @objc(download:)
-    public static func objc_download(file: UInt64) -> AnyPromise {
+    public static func objc_download(file: String) -> AnyPromise {
-        return AnyPromise.from(download(file))
+        guard let id = UInt64(file) else { return AnyPromise.from(Promise<Data>(error: Error.invalidURL)) }
+        return AnyPromise.from(download(id))
     }
     
     public static func download(_ file: UInt64) -> Promise<Data> {

SignalUtilitiesKit/To Do/OWSProfileManager.m

@@ -807,7 +807,7 @@ typedef void (^ProfileManagerFailureBlock)(NSError *error);
         
         AnyPromise *promise;
         if ([profilePictureURL containsString:SNFileServerAPIV2.server]) {
-            uint64_t *file = (uint64_t)[[profilePictureURL lastPathComponent] intValue];
+            NSString *file = [profilePictureURL lastPathComponent];
             promise = [SNFileServerAPIV2 download:file];
         } else {
             promise = [SNFileServerAPI downloadAttachmentFrom:profilePictureURL];