r17633: Return NULL at the end of the file, or else we can't tell the

difference between end of file and a blank line.

Andrew Bartlett
(This used to be commit 6fd6239a0f)

source4/lib/util/util_file.c

@@ -125,6 +125,10 @@ _PUBLIC_ char *afdgets(int fd, TALLOC_CTX *mem_ctx, size_t hint)
 
 		ret = read(fd, data + offset, hint);
 
+		if (ret == 0) {
+			return NULL;
+		}
+
 		if (ret == -1) {
 			talloc_free(data);
 			return NULL;