BUG: Fix windows install rule for Qt designer

git-svn-id: http://svn.slicer.org/Slicer4/trunk@27711 3bd1e089-480b-0410-8dfb-8563597acbee

Author: jcfr

CMake/SlicerBlockInstallQt.cmake

@@ -51,12 +51,12 @@ else()
       )
   endif()
 
-  if(UNIX)
+  # Get root directory
+  get_property(_filepath TARGET "Qt5::Core" PROPERTY LOCATION_RELEASE)
+  get_filename_component(_dir ${_filepath} PATH)
+  set(qt_root_dir "${_dir}/..")
 
-    # Get root directory
-    get_property(_filepath TARGET "Qt5::Core" PROPERTY LOCATION_RELEASE)
-    get_filename_component(_dir ${_filepath} PATH)
-    set(qt_root_dir "${_dir}/..")
+  if(UNIX)
 
     find_package(Qt5 REQUIRED COMPONENTS
       DBus