patch 8.2.0334: abort called when using test_void()

Problem:    Abort called when using test_void(). (Dominique Pelle)
Solution:   Only give an error, don't abort.
diff --git a/src/version.c b/src/version.c
index a828963..4dc9642 100644
--- a/src/version.c
+++ b/src/version.c
@@ -739,6 +739,8 @@
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    334,
+/**/
     333,
 /**/
     332,