fix: Do not close wazero module on error (#3758)

wazero takes care not to leak modules when `InstantiateModule` returns
an error.

This means that sqlc will call `result.Close` a second time if a non nil
module was returned, which causes a segfault.

Author: edman

internal/ext/wasm/wasm.go

@@ -222,12 +222,12 @@ func (r *Runner) Invoke(ctx context.Context, method string, args any, reply any,
 	}
 
 	result, err := runtimeAndCode.rt.InstantiateModule(ctx, runtimeAndCode.code, conf)
-	if result != nil {
-		defer result.Close(ctx)
-	}
 	if cerr := checkError(err, stderr); cerr != nil {
 		return cerr
 	}
+	if result != nil {
+		defer result.Close(ctx)
+	}
 
 	// Print WASM stdout
 	stdoutBlob := stdout.Bytes()