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, 1 insertions, 1 deletions

diff --git a/wiretap/visual.c b/wiretap/visual.c
index e29b79009f..02acaf711b 100644
--- a/wiretap/visual.c
+++ b/wiretap/visual.c
@@ -605,7 +605,7 @@ int visual_dump_can_write_encap(int encap)
         return 0;
     }
 
-    return WTAP_ERR_UNSUPPORTED_ENCAP;
+    return WTAP_ERR_UNWRITABLE_ENCAP;
 }