user32/combo: Properly handle WM_CTLCOLOR* messages.

dlls/user32/combo.c

@@ -1988,6 +1988,18 @@ LRESULT ComboWndProc_common( HWND hwnd, UINT message, WPARAM wParam, LPARAM lPar
                 if (GET_WHEEL_DELTA_WPARAM(wParam) < 0) return SendMessageW(hwnd, WM_KEYDOWN, VK_DOWN, 0);
                 return TRUE;
 
+        case WM_CTLCOLOR:
+        case WM_CTLCOLORMSGBOX:
+        case WM_CTLCOLOREDIT:
+        case WM_CTLCOLORLISTBOX:
+        case WM_CTLCOLORBTN:
+        case WM_CTLCOLORDLG:
+        case WM_CTLCOLORSCROLLBAR:
+        case WM_CTLCOLORSTATIC:
+            if (lphc->owner)
+                return SendMessageW(lphc->owner, message, wParam, lParam);
+            break;
+
 	/* Combo messages */
 
 	case CB_ADDSTRING:

dlls/user32/tests/combo.c

@@ -854,7 +854,6 @@ static void test_combo_ctlcolor(void)
     for (i = 0; i < ARRAY_SIZE(messages); ++i)
     {
         brush = (HBRUSH)SendMessageA(combo, messages[i], 0, (LPARAM)info.hwndItem);
-    todo_wine
         ok(brush == brush_red, "%u: unexpected brush %p, expected got %p.\n", i, brush, brush_red);
     }
 
@@ -865,7 +864,6 @@ static void test_combo_ctlcolor(void)
     for (i = 0; i < ARRAY_SIZE(messages); ++i)
     {
         brush = (HBRUSH)SendMessageA(combo, messages[i], 0, (LPARAM)info.hwndItem);
-    todo_wine
         ok(!brush, "%u: unexpected brush %p.\n", i, brush);
     }