Rename WTAP_ERR_UNSUPPORTED_ENCAP to WTAP_ERR_UNWRITABLE_ENCAP.

That makes it clearer what the problem is, and that it should only be
returned by the dump code path, not by the read code path.

Change-Id: Icc5c9cff43be6c073f0467607555fa7138c5d074
Reviewed-on: https://code.wireshark.org/review/5797
Reviewed-by: Guy Harris <guy@alum.mit.edu>

1 files changed, 2 insertions, 2 deletions

diff --git a/wiretap/nettl.c b/wiretap/nettl.c
index f859c2e265..88d42e6e8f 100644
--- a/wiretap/nettl.c
+++ b/wiretap/nettl.c
@@ -646,7 +646,7 @@ int nettl_dump_can_write_encap(int encap)
                 case WTAP_ENCAP_NETTL_UNKNOWN:
                         return 0;
                 default:
-                        return WTAP_ERR_UNSUPPORTED_ENCAP;
+                        return WTAP_ERR_UNWRITABLE_ENCAP;
         }
 }
 
@@ -764,7 +764,7 @@ static gboolean nettl_dump(wtap_dumper *wdh,
 #endif
                 default:
                         /* found one we don't support */
-                        *err = WTAP_ERR_UNSUPPORTED_ENCAP;
+                        *err = WTAP_ERR_UNWRITABLE_ENCAP;
                         return FALSE;
         }