Fix a wayward assert.

nufxlib-0/ChangeLog.txt

@@ -1,3 +1,8 @@
+2006/02/18  fadden
+    - Correct a wayward assert.  (Changing the filetype of a file from an
+      HFS disk, which has zero-length data fork, falsely triggered the
+      assert.)
+
 2005/09/17  ***** v2.1.0 shipped *****
 
 2005/09/17  fadden

nufxlib-0/FileIO.c

@@ -1412,7 +1412,7 @@ Nu_CopyFileSection(NuArchive* pArchive, FILE* dstFp, FILE* srcFp, long length)
     Assert(pArchive != nil);
     Assert(dstFp != nil);
     Assert(srcFp != nil);
-    Assert(length);
+    Assert(length >= 0);    /* can be == 0, e.g. empty data fork from HFS */
 
     /* nice big buffer, for speed... could use getc/putc for simplicity */
     err = Nu_AllocCompressionBufferIFN(pArchive);