Remove old checksum verification checks for dmg archives (#2568)

These are antiquated checks and they can take considerable time to perform. HTTPS or EdDSA verification will validate that an archive isn't corrupt.

Autoupdate/SUDiskImageUnarchiver.m

@@ -72,7 +72,9 @@ - (void)extractDMGWithNotifier:(SUUnarchiverNotifier *)notifier SPU_OBJC_DIRECT
 
         NSData *promptData = [NSData dataWithBytes:"yes\n" length:4];
 
-        NSMutableArray *arguments = [@[@"attach", _archivePath, @"-mountpoint", mountPoint, /*@"-noverify",*/ @"-nobrowse", @"-noautoopen"] mutableCopy];
+        // Finder doesn't verify disk images anymore beyond the code signing signature (if available)
+        // Opt out of the old CRC checksum checks
+        NSMutableArray *arguments = [@[@"attach", _archivePath, @"-mountpoint", mountPoint, @"-noverify", @"-nobrowse", @"-noautoopen"] mutableCopy];
 
         if (_decryptionPassword) {
             NSMutableData *passwordData = [[_decryptionPassword dataUsingEncoding:NSUTF8StringEncoding] mutableCopy];