Minor.

1 files changed, 3 insertions, 1 deletions

diff --git a/stc/cfmt.h b/stc/cfmt.h
index d056aa7a..642ed971 100644
--- a/stc/cfmt.h
+++ b/stc/cfmt.h
@@ -207,13 +207,15 @@ _cfmt_conv(int nargs, const char *fmt, ...) {
             fmt += 1 + (fmt[1] == ':');

             arg = va_arg(args, char *);

             *p++ = '%'; p0 = p; align = 0;

-            while (*fmt != '}' && *fmt) switch (*fmt) {

+            while (1) switch (*fmt) {

+                case '}': case '\0': goto done;

                 case '<': *p++ = '-', ++fmt, align = 1; break;

                 case '>': ++fmt, align = 1; break;

                 case '-': ++fmt; break;

                 case '*': if (++n <= nargs) arg = va_arg(args, char *); /* nobreak */

                 default: *p++ = *fmt++;

             }

+            done:

             if (!strchr("csdioxXufFeEaAgGnp", fmt[-1]))

                 while (*arg) *p++ = *arg++;

             if (p[-1] == 'B')