patch 8.1.2172: spell highlight is wrong at start of the line

Problem:    Spell highlight is wrong at start of the line.
Solution:   Fix setting the "v" variable. (closes #5078)
diff --git a/src/version.c b/src/version.c
index 0dd3677..901bf32 100644
--- a/src/version.c
+++ b/src/version.c
@@ -742,6 +742,8 @@
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    2172,
+/**/
     2171,
 /**/
     2170,