Patch from Nick Fedchik to fixup paths in busybox/libpwdgrp
which were not properly using the bb_path_*_file strings.
diff --git a/libpwdgrp/grent.c b/libpwdgrp/grent.c
index df91955..609ed1a 100644
--- a/libpwdgrp/grent.c
+++ b/libpwdgrp/grent.c
@@ -36,7 +36,7 @@
 {
 	if (grp_fd != -1)
 		close(grp_fd);
-	grp_fd = open("/etc/group", O_RDONLY);
+	grp_fd = open(bb_path_group_file, O_RDONLY);
 }
 
 void endgrent(void)