[hurd] 23/26: libshouldbeinlibc: fix error handling in maptime_map

[Samuel Thibault]

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sthibault pushed a commit to branch upstream
in repository hurd.

commit 2ca0296a824d12bc55e3d4d0bf580f26a10eb830
Author: Justus Winter <address@hidden>
Date:   Fri Oct 25 10:30:23 2013 +0200

    libshouldbeinlibc: fix error handling in maptime_map
    
    Found using the Clang Static Analyzer.
    
    * libshouldbeinlibc/maptime.c (maptime_map): Fix error handling.
---
 libshouldbeinlibc/maptime.c |    2 ++
 1 file changed, 2 insertions(+)

diff --git a/libshouldbeinlibc/maptime.c b/libshouldbeinlibc/maptime.c
index bc75045..cacf4b6 100644
--- a/libshouldbeinlibc/maptime.c
+++ b/libshouldbeinlibc/maptime.c
@@ -47,6 +47,8 @@ maptime_map (int use_mach_dev, char *dev_name,
        {
          err = device_open (device_master, 0, dev_name ?: "time", &device);
          mach_port_deallocate (mach_task_self (), device_master);
+         if (err)
+           return err;
        }
 
       err = device_map (device, VM_PROT_READ, 0, sizeof *mtime, &memobj, 0);

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