patch 7.4.990
Problem:    Test 86 fails on AppVeyor.
Solution:   Do some registry magic. (Ken Takata)
diff --git a/src/version.c b/src/version.c
index ddf260b..af7afea 100644
--- a/src/version.c
+++ b/src/version.c
@@ -742,6 +742,8 @@
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    990,
+/**/
     989,
 /**/
     988,