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

dlls/msi/database.c

@@ -1194,17 +1194,8 @@ UINT WINAPI MsiDatabaseExportW( MSIHANDLE handle, LPCWSTR szTable,
     TRACE("%x %s %s %s\n", handle, debugstr_w(szTable),
           debugstr_w(szFolder), debugstr_w(szFilename));
 
-    db = msihandle2msiinfo( handle, MSIHANDLETYPE_DATABASE );
-    if( !db )
-    {
-        MSIHANDLE remote_database = msi_get_remote(handle);
-        if ( !remote_database )
-            return ERROR_INVALID_HANDLE;
-
-        WARN("MsiDatabaseExport not allowed during a custom action!\n");
-
-        return ERROR_SUCCESS;
-    }
+    if (!(db = msihandle2msiinfo(handle, MSIHANDLETYPE_DATABASE)))
+        return ERROR_INVALID_HANDLE;
 
     r = MSI_DatabaseExport( db, szTable, szFolder, szFilename );
     msiobj_release( &db->hdr );

dlls/msi/tests/custom.c

@@ -1135,7 +1135,7 @@ static void test_invalid_functions(MSIHANDLE hinst)
 
     GetCurrentDirectoryA(sizeof(path), path);
     r = MsiDatabaseExportA(db, "Test", path, "bogus.idt");
-    todo_wine ok(hinst, r == ERROR_INVALID_HANDLE, "got %u\n", r);
+    ok(hinst, r == ERROR_INVALID_HANDLE, "got %u\n", r);
 
     r = MsiDatabaseImportA(db, path, "bogus.idt");
     todo_wine ok(hinst, r == ERROR_INVALID_HANDLE, "got %u\n", r);