Patch from Nick Fedchik to fixup paths in busybox/libpwdgrp
which were not properly using the bb_path_*_file strings.
diff --git a/libpwdgrp/initgroups.c b/libpwdgrp/initgroups.c
index f86b5a8..ce63adb 100644
--- a/libpwdgrp/initgroups.c
+++ b/libpwdgrp/initgroups.c
@@ -79,7 +79,7 @@
 	int grp_fd;
 
 
-	if ((grp_fd = open("/etc/group", O_RDONLY)) < 0)
+	if ((grp_fd = open(bb_path_group_file, O_RDONLY)) < 0)
 		return -1;
 
 	num_groups = 0;