patch 8.1.0649: setjmp() variables defined globally are used in one file

Problem:    setjmp() variables defined globally are used in one file.
Solution:   Move the declarations to that file.
diff --git a/src/version.c b/src/version.c
index 9ea9fc1..870ea89 100644
--- a/src/version.c
+++ b/src/version.c
@@ -800,6 +800,8 @@
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    649,
+/**/
     648,
 /**/
     647,