Use NULL instead of 0 for null pointer

diff --git a/util.c b/util.c
index 82fd28d4d005a0b456a29bb1d09c84b10d60aa51..a9ace6e34e646b7a77b6128fcb35a30029d91c81 100644 (file)
--- a/util.c
+++ b/util.c
@@ -948,7 +948,7 @@ gnu_getcwd(void)
                }
                free(buffer);
                if (errno != ERANGE) {
-                       return 0;
+                       return NULL;
                }
                size *= 2;
        }