win32: fix vasprintf

1 files changed, 3 insertions, 2 deletions

diff --git a/include/asprintf.h b/include/asprintf.h
index 3b0072e..65957e0 100644
--- a/include/asprintf.h
+++ b/include/asprintf.h
@@ -9,10 +9,11 @@
 static inline int vasprintf(char **PTR, const char *TEMPLATE, va_list AP)
 {
         int res;
-        res = vsnprintf(NULL, 32768, TEMPLATE, AP);
+        char buf[16];
+        res = vsnprintf(buf, 16, TEMPLATE, AP);
         if (res > 0) {
                 *PTR = (char*)malloc(res+1);
-                res = vsnprintf(*PTR, res, TEMPLATE, AP);
+                res = vsnprintf(*PTR, res+1, TEMPLATE, AP);
         }
         return res;
 }