Add BB_CMP to xfopen
diff --git a/utility.c b/utility.c
index 235b582..e79e441 100644
--- a/utility.c
+++ b/utility.c
@@ -1763,7 +1763,9 @@
 }
 #endif
 
-#if defined BB_HOSTNAME || defined BB_LOADACM || defined BB_MORE || defined BB_SED || defined BB_SH || defined BB_UNIQ || defined BB_WC
+#if defined BB_HOSTNAME || defined BB_LOADACM || defined BB_MORE \
+ || defined BB_SED || defined BB_SH || defined BB_UNIQ \
+ || defined BB_WC || defined BB_CMP
 FILE *xfopen(const char *path, const char *mode)
 {
 	FILE *fp;