[committed] Fix Wformat-security warning

[Tom de Vries <tdevries@suse.de>]

Hi,

When compiling using make CC=clang, we run into:
...
dwz.c:13819:16: warning: format string is not a string literal \
  (potentially insecure)
      [-Wformat-security]
  error (0, 0, msg);
               ^~~
dwz.c:13819:16: note: treat the string as an argument to avoid this
  error (0, 0, msg);
               ^
               "%s",
...

Fix the warning by making the format string a string literal, as suggested.

Committed to trunk.

Thanks,
- Tom

Fix Wformat-security warning

2019-12-17  Tom de Vries  <tdevries@suse.de>

	* dwz.c (usage): Fix Wformat-security warning.

---
 dwz.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/dwz.c b/dwz.c
index 48833bc..524cd6f 100644
--- a/dwz.c
+++ b/dwz.c
@@ -13816,7 +13816,7 @@ usage (void)
        "  dwz [common options] [-h] [-m COMMONFILE] [-M NAME | -r] [FILES]\n"
        "  dwz [common options] -o OUTFILE FILE\n"
        "  dwz [ -v | -? ]");
-  error (0, 0, msg);
+  error (0, 0, "%s", msg);
 
   indent = 30;
   limit = 80;