patch 8.2.2560: setting 'winminheigt' does not take tabline into account

Problem:    Setting 'winminheigt' does not take tabline into account.
Solution:   Subtract the tabline from the available height. (closes #7899)
diff --git a/src/version.c b/src/version.c
index 67fc08c..7f1e818 100644
--- a/src/version.c
+++ b/src/version.c
@@ -751,6 +751,8 @@
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    2560,
+/**/
     2559,
 /**/
     2558,