patch 9.0.2013: confusing ifdefs in if_<lang>.c

Problem:  confusing ifdefs in if_<lang>.c
Solution: refactor ifndefs to #ifdefs

if_x: Avoid using #ifndef - #else - #endif

Using #ifndef - #else - #endif is sometimes confusing.
Use #ifdef - #else - #endif instead.

closes: #13310

Signed-off-by: Christian Brabandt <cb@256bit.org>
Co-authored-by: Ken Takata <kentkt@csc.jp>
diff --git a/src/version.c b/src/version.c
index 0f5a10e..dd64eb3 100644
--- a/src/version.c
+++ b/src/version.c
@@ -705,6 +705,8 @@
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    2014,
+/**/
     2013,
 /**/
     2012,