merges r20934 from trunk into ruby_1_9_1.

	* io.c (pipe_open): need to initialize args.

git-svn-id: http://svn.ruby-lang.org/repos/ruby/branches/ruby_1_9_1@21010 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

1 files changed, 1 insertions, 1 deletions

diff --git a/io.c b/io.c
index 61801d36e..520c062a0 100644
--- a/io.c
+++ b/io.c
@@ -4448,7 +4448,7 @@ pipe_open(struct rb_exec_arg *eargp, VALUE prog, const char *modestr, int fmode,
     struct popen_arg arg;
 #elif defined(_WIN32)
     volatile VALUE argbuf;
-    char **args;
+    char **args = NULL;
     struct rb_exec_arg sarg;
     int pair[2], write_pair[2];
 #endif