dwarflist: Fix dwarf_version::form_class

diff --git a/dwarflint/dwarf_version.cc b/dwarflint/dwarf_version.cc
index 8da98a38ac3004dacfc5918ac7761ade5b2e0d5a..66e85e4377eef21d05d1bd81f8c659aaf43c4593 100644 (file)
--- a/dwarflint/dwarf_version.cc
+++ b/dwarflint/dwarf_version.cc
@@ -83,7 +83,7 @@ dwarf_version::form_class (form const *form, attribute const *attribute) const
       return ret;
     }
   else
-    return static_cast<dw_class> (ffsl (result.to_ulong ()));
+    return static_cast<dw_class> (ffsl (result.to_ulong ()) - 1);
 }
 
 form_width_t