Fix wxGetOsDescription() for Windows 10.

Check for Windows 10 was implemented as check for version 6.4 but the final
version of Windows 10 actually returns 10.0.

docs/changes.txt

@@ -164,6 +164,7 @@ wxMSW:
 - Don't send bogus root selection events when clicking wxTreeCtrl (sbrowne).
 - Avoid bogus assert after calling wxDatePickerCtrl::SetRange().
 - Add solution file for building with MSVS 2014 (Peter Tissen).
+- Correct wxGetOsDescription() for Windows 10 (Tobias Taschner).
 
 wxOSX/Cocoa:
 

src/msw/utils.cpp

@@ -1224,14 +1224,14 @@ wxString wxGetOsDescription()
                                     ? _("Windows Server 2012 R2")
                                     : _("Windows 8.1");
                             break;
-
-                        case 4:
-                            str = wxIsWindowsServer() == 1
-                                    ? _("Windows Server 10")
-                                    : _("Windows 10");
-                            break;
                     }
                     break;
+
+                case 10:
+                    str = wxIsWindowsServer() == 1
+                            ? _("Windows Server 10")
+                            : _("Windows 10");
+                    break;
             }
 
             if ( str.empty() )