https://bugs.gentoo.org/634994
--- a/misc.c
+++ b/misc.c
@@ -57,8 +57,7 @@
     vfprintf(stderr, message, args);
     va_end(args);
 
-    fprintf(stderr, strerror(err_num));
-    fprintf(stderr, "\n");
+    fprintf(stderr, "%s\n", strerror(err_num));
 }