msi: Fix handling of components without a key path in MsiEnumComponentCostsW.

dlls/msi/msi.c

@@ -1864,12 +1864,22 @@ UINT WINAPI MsiEnumComponentCostsW( MSIHANDLE handle, LPCWSTR component, DWORD i
 
     drive[0] = 0;
     *cost = *temp = 0;
+    GetWindowsDirectoryW( path, MAX_PATH );
     if (component && component[0])
     {
-        *cost = max( 8, comp->Cost / 512 );
         if (comp->assembly && !comp->assembly->application) *temp = comp->Cost;
-        if ((file = get_loaded_file( package, comp->KeyPath )))
+        if (!comp->Enabled || !comp->KeyPath)
         {
+            *cost = 0;
+            drive[0] = path[0];
+            drive[1] = ':';
+            drive[2] = 0;
+            *buflen = 2;
+            r = ERROR_SUCCESS;
+        }
+        else if ((file = get_loaded_file( package, comp->KeyPath )))
+        {
+            *cost = max( 8, comp->Cost / 512 );
             drive[0] = file->TargetPath[0];
             drive[1] = ':';
             drive[2] = 0;
@@ -1880,7 +1890,6 @@ UINT WINAPI MsiEnumComponentCostsW( MSIHANDLE handle, LPCWSTR component, DWORD i
     else if (IStorage_Stat( package->db->storage, &stat, STATFLAG_NONAME ) == S_OK)
     {
         *temp = max( 8, stat.cbSize.QuadPart / 512 );
-        GetWindowsDirectoryW( path, MAX_PATH );
         drive[0] = path[0];
         drive[1] = ':';
         drive[2] = 0;

dlls/msi/tests/package.c

@@ -12942,16 +12942,13 @@ static void test_MsiEnumComponentCosts(void)
     r = add_file_entry( hdb, "'one.txt', 'one', 'one.txt', 4096, '', '', 8192, 1" );
     ok( r == ERROR_SUCCESS, "cannot add file %u\n", r );
 
-    r = add_file_entry( hdb, "'two.txt', 'two', 'two.txt', 8192, '', '', 8192, 2" );
-    ok( r == ERROR_SUCCESS, "cannot add file %u\n", r );
-
     r = create_component_table( hdb );
     ok( r == ERROR_SUCCESS, "cannot create Component table %u\n", r );
 
     r = add_component_entry( hdb, "'one', '{B2F86B9D-8447-4BC5-8883-750C45AA31CA}', 'TARGETDIR', 0, '', 'one.txt'" );
     ok( r == ERROR_SUCCESS, "cannot add component %u\n", r );
 
-    r = add_component_entry( hdb, "'two', '{62A09F6E-0B74-4829-BDB7-CAB66F42CCE8}', 'TARGETDIR', 0, '', 'two.txt'" );
+    r = add_component_entry( hdb, "'two', '{62A09F6E-0B74-4829-BDB7-CAB66F42CCE8}', 'TARGETDIR', 0, '', ''" );
     ok( r == ERROR_SUCCESS, "cannot add component %u\n", r );
 
     r = create_feature_table( hdb );
@@ -13103,6 +13100,16 @@ static void test_MsiEnumComponentCosts(void)
     len = sizeof(drive);
     drive[0] = 0;
     cost = temp = 0xdead;
+    r = MsiEnumComponentCostsA( hpkg, "two", 0, INSTALLSTATE_LOCAL, drive, &len, &cost, &temp );
+    ok( r == ERROR_SUCCESS, "Expected ERROR_SUCCESS, got %u\n", r );
+    ok( len == 2, "expected len == 2, got %u\n", len );
+    ok( drive[0], "expected a drive\n" );
+    ok( !cost, "expected cost == 0, got %d\n", cost );
+    ok( !temp, "expected temp == 0, got %d\n", temp );
+
+    len = sizeof(drive);
+    drive[0] = 0;
+    cost = temp = 0xdead;
     r = MsiEnumComponentCostsA( hpkg, "", 0, INSTALLSTATE_UNKNOWN, drive, &len, &cost, &temp );
     ok( r == ERROR_SUCCESS, "Expected ERROR_SUCCESS, got %u\n", r );
     ok( len == 2, "expected len == 2, got %u\n", len );