fixed crash bug caused by using va_list twice

diff --git a/src/libgame/misc.c b/src/libgame/misc.c
index 599879eb02f62ce5994da6bd57c7de613c499264..e12daa8e5faced231ea16c3b3ab0d28f791a14ab 100644 (file)
--- a/src/libgame/misc.c
+++ b/src/libgame/misc.c
@@ -1252,10 +1252,15 @@ char *getStringToLower(const char *s)
 
 static char *getStringVPrint(char *format, va_list ap)
 {
+  va_list ap_test;
   char test[1];
 
+  va_copy(ap_test, ap);
+
   // determine required size of string to be printed
-  int size = vsnprintf(test, 1, format, ap);
+  int size = vsnprintf(test, 1, format, ap_test);
+
+  va_end(ap_test);
 
   // check if something went wrong (should not happen)
   if (size < 0)