patch 9.0.1151: build failure

Problem:    Build failure.
Solution:   Add missing part of :interface change.
diff --git a/src/version.c b/src/version.c
index 8177cab..78fad97 100644
--- a/src/version.c
+++ b/src/version.c
@@ -696,6 +696,8 @@
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    1151,
+/**/
     1150,
 /**/
     1149,