patch 8.0.1448: segfault with exception inside :rubyfile command

Problem:    Segmentation fault when Ruby throws an exception inside :rubyfile
            command.
Solution:   Use rb_protect() instead of rb_load_protect(). (ujihisa,
            closes #2147, greywolf, closes #2512, #2511)
diff --git a/src/version.c b/src/version.c
index 94d58f8..1da5bbd 100644
--- a/src/version.c
+++ b/src/version.c
@@ -772,6 +772,8 @@
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    1448,
+/**/
     1447,
 /**/
     1446,