fix argument type.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@16186 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

1 files changed, 1 insertions, 1 deletions

diff --git a/process.c b/process.c
index 69fecefba9..8eb474f447 100644
--- a/process.c
+++ b/process.c
@@ -1553,7 +1553,7 @@ check_exec_env_i(st_data_t st_key, st_data_t st_val, st_data_t arg)
 }
 
 static VALUE
-rb_check_exec_env(hash)
+rb_check_exec_env(VALUE hash)
 {
     VALUE env;