cmake: fix Windows build with IPv6 support

Patch-by: "Z98"

CMake/Platforms/WindowsCache.cmake

@@ -108,7 +108,11 @@ if(NOT UNIX)
     set(HAVE_IN_ADDR_T 0)
     set(HAVE_INET_NTOA_R_DECL 0)
     set(HAVE_INET_NTOA_R_DECL_REENTRANT 0)
-    set(HAVE_GETADDRINFO 0)
+    if(ENABLE_IPV6)
+      set(HAVE_GETADDRINFO 1)
+    else()
+      set(HAVE_GETADDRINFO 0)
+    endif()
     set(STDC_HEADERS 1)
     set(RETSIGTYPE_TEST 1)