patch 9.0.1638: crypt tests hang and cause memory errors

Problem:    crypt tests hang and cause memory errors
Solution:   Move variable to start of function.
diff --git a/src/version.c b/src/version.c
index a91e6fb..9488cda 100644
--- a/src/version.c
+++ b/src/version.c
@@ -696,6 +696,8 @@
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    1638,
+/**/
     1637,
 /**/
     1636,