Syslinux - Jun 2010 - [PATCH] linux/syslinux.c: Nullify if empty

From: Gene Cumm <gene.cumm at gmail.com>

linux/syslinux.c: Nullify subdir if empty as it converts to "(null)"
with printf variants, yielding the wrong path for ldlinux_path and
ldlinux_name.

Signed-off-by: Gene Cumm <gene.cumm at gmail.com>

---
diff --git a/linux/syslinux.c b/linux/syslinux.c
index 8db9cdd..470157e 100644
--- a/linux/syslinux.c
+++ b/linux/syslinux.c
@@ -288,6 +288,9 @@ int main(int argc, char *argv[])
     if (!subdir) {
        perror(program);
        exit(1);
+    } else if (strlen(subdir) == 0) {
+       free(subdir);
+       subdir = NULL;
     }

     if (!opt.device)