[PATCH 1/2] common: avoid segfault

[Daniel Kahn Gillmor]

* common/sysutils.c (gnupg_inotify_watch_socket): return EINVAL if
  socket_name is NULL, rather than segfaulting

Signed-off-by: Daniel Kahn Gillmor <dkg at fifthhorseman.net>
---
 common/sysutils.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/common/sysutils.c b/common/sysutils.c
index ab2012c..3677d39 100644
--- a/common/sysutils.c
+++ b/common/sysutils.c
@@ -987,6 +987,9 @@ gnupg_inotify_watch_socket (int *r_fd, const char *socket_name)
 
   *r_fd = -1;
 
+  if (!socket_name)
+    return gpg_error (GPG_ERR_EINVAL);
+  
   fname = xtrystrdup (socket_name);
   if (!fname)
     return my_error_from_syserror ();
-- 
2.9.3