crt: Remove redundant STARTUPINFO initialization.

Signed-off-by: Jacek Caban <jacek@codeweavers.com>
diff --git a/mingw-w64-crt/crt/crtexewin.c b/mingw-w64-crt/crt/crtexewin.c
index 26179fa..af860f3 100644
--- a/mingw-w64-crt/crt/crtexewin.c
+++ b/mingw-w64-crt/crt/crtexewin.c
@@ -56,7 +56,6 @@
 
   {
     STARTUPINFO StartupInfo;
-    memset (&StartupInfo, 0, sizeof (STARTUPINFO));
     GetStartupInfo (&StartupInfo);
     if (StartupInfo.dwFlags & STARTF_USESHOWWINDOW)
       nShowCmd = StartupInfo.wShowWindow;