Fix error: implicit conversion loses integer precision

http://ci.rvm.jp/results/trunk_clang_50@silicon-docker/627906
```
iseq.h:41:36: error: implicit conversion loses integer precision: 'rb_num_t' (aka 'unsigned long') to 'int' [-Werror,-Wshorten-64-to-32]
    int cnt = iseq->body->variable.flip_count;
        ~~~   ~~~~~~~~~~~~~~~~~~~~~^~~~~~~~~~
```

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@62708 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

1 files changed, 2 insertions, 2 deletions

diff --git a/iseq.h b/iseq.h
index a39d827670..0a0edd9b7a 100644
--- a/iseq.h
+++ b/iseq.h
@@ -35,10 +35,10 @@ rb_call_info_kw_arg_bytes(int keyword_len)
 
 #define ISEQ_FLIP_CNT(iseq) (iseq)->body->variable.flip_count
 
-static inline int
+static inline rb_snum_t
 ISEQ_FLIP_CNT_INCREMENT(const rb_iseq_t *iseq)
 {
-    int cnt = iseq->body->variable.flip_count;
+    rb_snum_t cnt = iseq->body->variable.flip_count;
     iseq->body->variable.flip_count += 1;
     return cnt;
 }