patch 9.1.0037: Calling get_breakindent_win() repeatedly when computing virtcol

Problem:  Calling get_breakindent_win() repeatedly when computing
          virtual column, and get_breakindent_win() does a STRCMP() on
          the whole line since patch 9.0.0016.
Solution: Cache the result, since the line doesn't change.
          (zeertzjq)

closes: #13879

Signed-off-by: zeertzjq <zeertzjq@outlook.com>
Signed-off-by: Christian Brabandt <cb@256bit.org>
diff --git a/src/version.c b/src/version.c
index bcc43f2..47f2997 100644
--- a/src/version.c
+++ b/src/version.c
@@ -705,6 +705,8 @@
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    37,
+/**/
     36,
 /**/
     35,