Pass searchDepth as ref

Author: BobLd

src/UglyToad.PdfPig/Tokenization/Scanner/PdfTokenScanner.cs

@@ -626,7 +626,7 @@ private DictionaryToken GetStreamDictionary()
                     if (offset < 0)
                     {
                         ushort searchDepth = 0;
-                        var result = GetObjectFromStream(lengthReference.Data, offset, searchDepth);
+                        var result = GetObjectFromStream(lengthReference.Data, offset, ref searchDepth);
 
                         if (!(result.Data is NumericToken streamLengthToken))
                         {
@@ -719,10 +719,10 @@ public void DeregisterCustomTokenizer(ITokenizer tokenizer)
         public ObjectToken? Get(IndirectReference reference)
         {
             ushort searchDepth = 0;
-            return Get(reference, searchDepth);
+            return Get(reference, ref searchDepth);
         }
 
-        private ObjectToken? Get(IndirectReference reference, ushort searchDepth)
+        private ObjectToken? Get(IndirectReference reference, ref ushort searchDepth)
         {
             if (searchDepth > 1_000)
             {
@@ -755,7 +755,7 @@ public void DeregisterCustomTokenizer(ITokenizer tokenizer)
             // Negative offsets refer to a stream with that number.
             if (offset < 0)
             {
-                var result = GetObjectFromStream(reference, offset, searchDepth);
+                var result = GetObjectFromStream(reference, offset, ref searchDepth);
 
                 return result;
             }
@@ -817,11 +817,11 @@ private ObjectToken BruteForceFileToFindReference(IndirectReference reference)
             }
         }
 
-        private ObjectToken GetObjectFromStream(IndirectReference reference, long offset, ushort searchDepth)
+        private ObjectToken GetObjectFromStream(IndirectReference reference, long offset, ref ushort searchDepth)
         {
             var streamObjectNumber = offset * -1;
 
-            var streamObject = Get(new IndirectReference(streamObjectNumber, 0), searchDepth);
+            var streamObject = Get(new IndirectReference(streamObjectNumber, 0), ref searchDepth);
 
             if (!(streamObject?.Data is StreamToken stream))
             {