Add string parameter to WASM_UNREACHABLE (#2499)

This works more like llvm's unreachable handler in that is preserves
information even in release builds.

1 files changed, 1 insertions, 1 deletions

diff --git a/src/dataflow/node.h b/src/dataflow/node.h
index 2966034ac..612a2f613 100644
--- a/src/dataflow/node.h
+++ b/src/dataflow/node.h
@@ -165,7 +165,7 @@ struct Node {
       case Bad:
         return unreachable;
       default:
-        WASM_UNREACHABLE();
+        WASM_UNREACHABLE("invalid node type");
     }
   }