Windows : fix search for WiX root directory when using 64bit cmake

"C:\Program Files (x86)" directory needs to be checked as well in
this case.

win/packaging/CMakeLists.txt

@@ -24,10 +24,13 @@ ENDIF()
 
 
 SET(MANUFACTURER "MariaDB Corporation Ab")
-FIND_PATH(WIX_DIR heat.exe
-  "$ENV{ProgramFiles}/WiX Toolset v3.9/bin"
-  "$ENV{ProgramFiles}/WiX Toolset v3.10/bin"
-)
+SET(WIX_BIN_PATHS)
+FOREACH(WIX_VER 3.9 3.10 3.11)
+  LIST(APPEND WIX_BIN_PATHS "$ENV{ProgramFiles}/WiX Toolset v${WIX_VER}/bin")
+  LIST(APPEND WIX_BIN_PATHS "$ENV{ProgramFiles} (x86)/WiX Toolset v${WIX_VER}/bin")
+ENDFOREACH()
+
+FIND_PATH(WIX_DIR heat.exe ${WIX_BIN_PATHS})
 SET(CPACK_WIX_PACKAGE_BASE_NAME "MariaDB")
 IF(CMAKE_SIZEOF_VOID_P EQUAL 4)
  SET(CPACK_WIX_UPGRADE_CODE "49EB7A6A-1CEF-4A1E-9E89-B9A4993963E3")