patch 8.2.3713: MS-Windows: no error if vimgrep pattern is not matching

Problem:    MS-Windows: No error message if vimgrep pattern is not matching.
Solution:   Give an error message. (Christian Brabandt, closes #9245,
            closes #8762)
diff --git a/src/version.c b/src/version.c
index d6f409e..30be8ae 100644
--- a/src/version.c
+++ b/src/version.c
@@ -754,6 +754,8 @@
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    3713,
+/**/
     3712,
 /**/
     3711,