patch 8.2.1039: cannot put NUL byte on clipboard

Problem:    Cannot put NUL byte on clipboard.
Solution:   Use the text length. (Christian Brabandt, closes #6312,
            closes #6149)
diff --git a/src/version.c b/src/version.c
index b383830..d6ed2cd 100644
--- a/src/version.c
+++ b/src/version.c
@@ -755,6 +755,8 @@
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    1039,
+/**/
     1038,
 /**/
     1037,