msi: Return ERROR_INVALID_HANDLE when MsiOpenPackage() is called from a custom action.

dlls/msi/package.c

@@ -1471,18 +1471,8 @@ UINT MSI_OpenPackageW(LPCWSTR szPackage, DWORD dwOptions, MSIPACKAGE **pPackage)
     if( szPackage[0] == '#' )
     {
         handle = atoiW(&szPackage[1]);
-        db = msihandle2msiinfo( handle, MSIHANDLETYPE_DATABASE );
-        if( !db )
-        {
-            MSIHANDLE remote;
-
-            if (!(remote = msi_get_remote(handle)))
-                return ERROR_INVALID_HANDLE;
-
-            WARN("MsiOpenPackage not allowed during a custom action!\n");
-
-            return ERROR_FUNCTION_FAILED;
-        }
+        if (!(db = msihandle2msiinfo(handle, MSIHANDLETYPE_DATABASE)))
+            return ERROR_INVALID_HANDLE;
     }
     else
     {

dlls/msi/tests/custom.c

@@ -1154,7 +1154,7 @@ static void test_invalid_functions(MSIHANDLE hinst)
 
     sprintf(package_name, "#%u", db);
     r = MsiOpenPackageA(package_name, &package);
-    todo_wine ok(hinst, r == ERROR_INVALID_HANDLE, "got %u\n", r);
+    ok(hinst, r == ERROR_INVALID_HANDLE, "got %u\n", r);
 
     MsiCloseHandle(db);
 }