daemon: debug segv correct use of dereferencing NULL.

[libguestfs.git] / daemon / realpath.c

diff --git a/daemon/realpath.c b/daemon/realpath.c
index 607381b..ea936c6 100644 (file)
--- a/daemon/realpath.c
+++ b/daemon/realpath.c
@@ -13,7 +13,7 @@
  *
  * You should have received a copy of the GNU General Public License
  * along with this program; if not, write to the Free Software
- * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
  */
 
 #include <config.h>
@@ -179,7 +179,8 @@ do_case_sensitive_path (const char *path)
     }
   }
 
-  close (fd_cwd);
+  if (fd_cwd >= 0)
+    close (fd_cwd);
 
   ret[next] = '\0';
   char *retp = strdup (ret);
@@ -190,6 +191,8 @@ do_case_sensitive_path (const char *path)
   return retp;                  /* caller frees */
 
  error:
-  close (fd_cwd);
+  if (fd_cwd >= 0)
+    close (fd_cwd);
+
   return NULL;
 }