Fixed: CustomFormat size specs in already grabbed check

Sizes need to be parsed as a long not an int else anything with a size
> 2GiB will fail to be parsed and be set with size 0

Fixes #4262

src/NzbDrone.Core.Test/ParserTests/ParsingServiceTests/AugmentersTests/AugmentWithHistoryFixture.cs

@@ -79,9 +79,9 @@ namespace NzbDrone.Core.Test.ParserTests.ParsingServiceTests.AugmentersTests
         [Test]
         public void should_add_size()
         {
-            var history = HistoryWithData("Size", 1500.ToString());
+            var history = HistoryWithData("Size", 9663676416.ToString());
             var movieInfo = Subject.AugmentMovieInfo(MovieInfo, history);
-            movieInfo.ExtraInfo["Size"].ShouldBeEquivalentTo(1500);
+            movieInfo.ExtraInfo["Size"].ShouldBeEquivalentTo(9663676416);
         }
 
         [Test]

src/NzbDrone.Core/Parser/Augmenters/AugmentWithHistory.cs

@@ -44,7 +44,7 @@ namespace NzbDrone.Core.Parser.Augmenters
                     releaseInfo.IndexerId = indexerId;
                 }
 
-                if (int.TryParse(history.Data.GetValueOrDefault("size"), out var size))
+                if (long.TryParse(history.Data.GetValueOrDefault("size"), out var size))
                 {
                     releaseInfo.Size = size;
                 }