msi: Handle sorting an empty table.

dlls/msi/table.c

@@ -2054,6 +2054,9 @@ static UINT TABLE_sort(struct tagMSIVIEW *view, column_info *columns)
     if (r != ERROR_SUCCESS)
         return r;
 
+    if (rows == 0)
+        return ERROR_SUCCESS;
+
     order = msi_alloc_zero(sizeof(MSIORDERINFO) + sizeof(UINT) * cols);
     if (!order)
         return ERROR_OUTOFMEMORY;

dlls/msi/tests/db.c

@@ -4777,6 +4777,10 @@ static void test_order(void)
     hdb = create_db();
     ok(hdb, "failed to create db\n");
 
+    query = "CREATE TABLE `Empty` ( `A` SHORT NOT NULL PRIMARY KEY `A`)";
+    r = run_query(hdb, 0, query);
+    ok(r == ERROR_SUCCESS, "Expected ERROR_SUCCESS, got %d\n", r);
+
     query = "CREATE TABLE `Mesa` ( `A` SHORT NOT NULL, `B` SHORT, `C` SHORT PRIMARY KEY `A`)";
     r = run_query(hdb, 0, query);
     ok(r == ERROR_SUCCESS, "Expected ERROR_SUCCESS, got %d\n", r);
@@ -4964,6 +4968,18 @@ static void test_order(void)
 
     MsiViewClose(hview);
     MsiCloseHandle(hview);
+
+    query = "SELECT * FROM `Empty` ORDER BY `A`";
+    r = MsiDatabaseOpenView(hdb, query, &hview);
+    ok(r == ERROR_SUCCESS, "Expected ERROR_SUCCESS, got %d\n", r);
+    r = MsiViewExecute(hview, 0);
+    ok(r == ERROR_SUCCESS, "Expected ERROR_SUCCESS, got %d\n", r);
+
+    r = MsiViewFetch(hview, &hrec);
+    ok(r == ERROR_NO_MORE_ITEMS, "Expected ERROR_NO_MORE_ITEMS, got %d\n", r);
+
+    MsiViewClose(hview);
+    MsiCloseHandle(hview);
     MsiCloseHandle(hdb);
 }