build: fix mingw-w64 compilation

Set `ZMQ_HAVE_IPC OFF` all Windows builds, rather than just
`WindowsStore` builds. This fixes compiling with mingw-w64, and mirrors
the autotools builds system:
```bash
case "${host_os}" in
    *vxworks*|*openvms*|*mingw*)
        ;;
```

CMakeLists.txt

@@ -313,9 +313,9 @@ set(POLLER
   kqueue, epoll, devpoll, pollset, poll or select [default=autodetect]")
 
 if(WIN32)
+  set(ZMQ_HAVE_IPC OFF)
   if(CMAKE_SYSTEM_NAME STREQUAL "WindowsStore" AND CMAKE_SYSTEM_VERSION MATCHES "^10.0")
     set(ZMQ_HAVE_WINDOWS_UWP ON)
-    set(ZMQ_HAVE_IPC OFF)
     # to remove compile warninging "D9002 ignoring unknown option"
     string(REPLACE "/Zi" "" CMAKE_CXX_FLAGS_DEBUG ${CMAKE_CXX_FLAGS_DEBUG})
     set(CMAKE_CXX_FLAGS_DEBUG