Trivially simplify rust_language::print_enum

rust_language::print_enum computes:

  int nfields = variant_type->num_fields ();

... but then does not reuse this in one spot.  This patch corrects the
oversight.

diff --git a/gdb/rust-lang.c b/gdb/rust-lang.c
index 6653f7a9c648856aec3311caa96f0cb3d38ae4e6..f2017f952118d95a16eea7e19579d02a8456ba83 100644 (file)
--- a/gdb/rust-lang.c
+++ b/gdb/rust-lang.c
@@ -495,7 +495,7 @@ rust_language::print_enum (struct value *val, struct ui_file *stream,
     }
 
   bool first_field = true;
-  for (int j = 0; j < variant_type->num_fields (); j++)
+  for (int j = 0; j < nfields; j++)
     {
       if (!first_field)
        gdb_puts (", ", stream);