Prefer `0` over `NULL` as function pointers

SunC warns use of `NULL`, pointer to data as function pointers.

1 files changed, 1 insertions, 1 deletions

diff --git a/time.c b/time.c
index 4dbdd3cf7d..d3eb4be682 100644
--- a/time.c
+++ b/time.c
@@ -5828,7 +5828,7 @@ Init_Time(void)
 
     if (debug_find_time_numguess) {
         rb_define_hooked_variable("$find_time_numguess", (VALUE *)&find_time_numguess,
-                                  find_time_numguess_getter, NULL);
+                                  find_time_numguess_getter, 0);
     }
 
     rb_cTimeTM = Init_tm(rb_cTime, "tm");