[Qemu-trivial] [PATCH for 1.2] qemu-ga: Fix null pointer passed to unlink in failure branch

[Stefan Weil]

Clang reports this warning:

Null pointer passed as an argument to a 'nonnull' parameter

Signed-off-by: Stefan Weil <address@hidden>
---
 qemu-ga.c |    4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/qemu-ga.c b/qemu-ga.c
index 26671fe..7623079 100644
--- a/qemu-ga.c
+++ b/qemu-ga.c
@@ -438,7 +438,9 @@ static void become_daemon(const char *pidfile)
     return;
 
 fail:
-    unlink(pidfile);
+    if (pidfile) {
+        unlink(pidfile);
+    }
     g_critical("failed to daemonize");
     exit(EXIT_FAILURE);
 #endif
-- 
1.7.10