patch 9.0.1050: using freed memory when assigning to variable twice

Problem:    Using freed memory when assigning to variable twice.
Solution:   Make copy of the list type. (closes #11691)
diff --git a/src/version.c b/src/version.c
index 48d9250..f72d537 100644
--- a/src/version.c
+++ b/src/version.c
@@ -696,6 +696,8 @@
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    1050,
+/**/
     1049,
 /**/
     1048,