Index: apitests/ntdll/sprintf.c
===================================================================
--- apitests/ntdll/sprintf.c	(revision 70217)
+++ apitests/ntdll/sprintf.c	(working copy)
@@ -28,10 +28,15 @@
 my_sprintf(char *buf, const char *format, ...)
 {
     const TCHAR * fmt = format;
+    int nchar;
     va_list argptr;
 
     va_start(argptr, format);
-    return p_vsprintf(buf, fmt, argptr);
+    nchar = p_vsprintf(buf, fmt, argptr);
+    va_end(argptr);
+
+    return nchar;
+
 }
 
 int
@@ -38,10 +43,14 @@
 my_swprintf(wchar_t *buf, const wchar_t *format, ...)
 {
     const wchar_t * fmt = format;
+    int nwchar;
     va_list argptr;
 
     va_start(argptr, format);
-    return _vsnwprintf(buf, MAXLONG, fmt, argptr);
+    nwchar = _vsnwprintf(buf, MAXLONG, fmt, argptr);
+    va_end(argptr);
+
+    return nwchar;
 }
 
 #define sprintf(buf, format, ...) my_sprintf(buf, format, __VA_ARGS__);