patch 9.0.1913: if_python: undefined behaviour for function pointers

Problem:  if_python: undefined behaviour for function pointers
Solution: Fix if_python undefined behavior for function pointer casts

Identified by clang 17 UBSAN (see #12745). Make sure to cast function
pointers with the same signature only.

closes: #13122

Signed-off-by: Christian Brabandt <cb@256bit.org>
Co-authored-by: Yee Cheng Chin <ychin.git@gmail.com>
diff --git a/src/version.c b/src/version.c
index 42ac808..c43b28f 100644
--- a/src/version.c
+++ b/src/version.c
@@ -700,6 +700,8 @@
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    1913,
+/**/
     1912,
 /**/
     1911,