[PATCH] autofs4 - fix false positive compile error

[Ian Kent <raven@themaw.net>]

On strict build environments we can see:

fs/autofs4/inode.c: In function 'autofs4_fill_super':
fs/autofs4/inode.c:312: error: 'pgrp' may be used uninitialized in this
function
make[2]: *** [fs/autofs4/inode.o] Error 1
make[1]: *** [fs/autofs4] Error 2
make: *** [fs] Error 2
make: *** Waiting for unfinished jobs....

This is due to the use of pgrp_set being used to indicate pgrp has
has been set rather than initializing pgrp itself.

Signed-off-by: Ian Kent <raven@themaw.net>
---
 fs/autofs4/inode.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/fs/autofs4/inode.c b/fs/autofs4/inode.c
index d7bd395..1c55388 100644
--- a/fs/autofs4/inode.c
+++ b/fs/autofs4/inode.c
@@ -210,7 +210,7 @@ int autofs4_fill_super(struct super_block *s, void *data, int silent)
 	int pipefd;
 	struct autofs_sb_info *sbi;
 	struct autofs_info *ino;
-	int pgrp;
+	int pgrp = 0;
 	bool pgrp_set = false;
 	int ret = -EINVAL;