patch 8.2.0444: swap file test fails on some systems

Problem:    Swap file test fails on some systems.
Solution:   Preserve the swap file. Send NL terminated keys.
diff --git a/src/version.c b/src/version.c
index 2e219a9..4230f54 100644
--- a/src/version.c
+++ b/src/version.c
@@ -739,6 +739,8 @@
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    444,
+/**/
     443,
 /**/
     442,