satellite: fix exception overriding peer verification

Fix an exception raised when trying to override the peer verification
settings on the CLI, where vcfg wouldn't be defined if the previous
term was true. Walrus fail.

Signed-off-by: John Mulligan <[email protected]>

Author: phlogistonjohn

sambacc/commands/satellite/keybridge.py

@@ -173,7 +173,8 @@ def _serve(ctx: Context) -> None:
             raise Fail(str(err))
 
     scopes = [_new_scope(ctx, s) for s in cfg.scopes()]
-    if ctx.cli.verify_peer or (vcfg := cfg.verify()):
+    vcfg = cfg.verify()
+    if ctx.cli.verify_peer or vcfg:
         scopes = [_verify_peer(ctx, vcfg, s) for s in scopes]
     if not scopes:
         raise Fail("no keybridge scopes defined")