Fix warnings in the code emitted by the wasm pinvoke generator. (#45322)

tools-local/tasks/mobile.tasks/WasmAppBuilder/PInvokeTableGenerator.cs

@@ -218,13 +218,13 @@ private void EmitNativeToInterp(StreamWriter w, List<PInvokeCallback> callbacks)
             foreach (var p in method.GetParameters()) {
                 if (pindex > 0)
                     sb.Append(',');
-                sb.Append("int");
+                sb.Append("int*");
                 pindex++;
             }
             if (pindex > 0)
                 sb.Append(',');
             // Extra arg
-            sb.Append("int");
+            sb.Append("int*");
             sb.Append(");\n");
 
             bool is_void = method.ReturnType.Name == "Void";