interface instantiation checks for errant name resolution

src/Convert/Scoper.hs

@@ -54,6 +54,7 @@ module Convert.Scoper
     , lookupLocalIdentM
     , scopeModuleItemT
     , Replacements
+    , LookupResult
     ) where
 
 import Control.Monad.State.Strict

test/error/interface_bad_expr.sv

+// pattern: inlining instance "intf" of interface "Interface" would make expression "x" used in "intf" resolvable when it wasn't previously
+interface Interface;
+    assign x = 1;
+endinterface
+module top;
+    wire x;
+    Interface intf();
+endmodule