patch 9.0.1216: Coverity warns for ignoring return value

Problem:    Coverity warns for ignoring return value.
Solution:   Break out of loop if function fails.
diff --git a/src/version.c b/src/version.c
index 5565ccb..d63abc3 100644
--- a/src/version.c
+++ b/src/version.c
@@ -696,6 +696,8 @@
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    1216,
+/**/
     1215,
 /**/
     1214,