extern/concat.h: don't segfault if count == 0

diff --git a/extern/concat.h b/extern/concat.h
index 7f2ea46a2d0470a0ee647029d815718abe25be36..0f3be9981bc57ae77c01d309b2e795abbe1e307b 100644 (file)
--- a/extern/concat.h
+++ b/extern/concat.h
@@ -11,6 +11,9 @@ ccat(const unsigned short int count, ...)
        unsigned short int i;
        concat[0] = '\0';
 
+       if (count == 0)
+               return;
+
        va_start(ap, count);
        for(i = 0; i < count; i++)
                strlcat(concat, va_arg(ap, char *), sizeof(concat));