getprogname: fix port to IRIX

* lib/getprogname.c (getprogname) [__sgi]:
Don't dump core if malloc returns NULL.

1 files changed, 5 insertions, 2 deletions

diff --git a/lib/getprogname.c b/lib/getprogname.c
index 729f01ed54..abc03ec2b2 100644
--- a/lib/getprogname.c
+++ b/lib/getprogname.c
@@ -169,8 +169,11 @@ getprogname (void)
           char *namenul = memchr (name, '\0', namesize);
           size_t namelen = namenul ? namenul - name : namesize;
           char *namecopy = malloc (namelen + 1);
-          namecopy[namelen] = 0;
-          return memcpy (namecopy, name, namelen);
+          if (namecopy)
+            {
+              namecopy[namelen] = 0;
+              return memcpy (namecopy, name, namelen);
+            }
         }
     }
   return NULL;