Apply the commit from portableproplib's git master:

commit b2975842aba26df9b9885ff56b2ff182eda06152
Author: Juan RP <xtraeme@gmail.com>
Date:   Thu Apr 29 18:23:15 2010 +0200

    Remove some dead code found by the LLVM's clang static analyzer.

--HG--
extra : convert_revision : xtraeme%40gmail.com-20100429162412-gq0on6wybpoaazgg

lib/portableproplib/prop_data.c

@@ -485,7 +485,6 @@ _prop_data_internalize_decode(struct _prop_object_internalize_context *ctx,
 			/* Make sure there is another trailing = */
 			if (ch != _prop_data_pad64)
 				return (false);
-			ch = (unsigned char) *src;
 			/* FALLTHROUGH */
 		
 		case 3:		/* Valid, two bytes of info */