silence MSVC warning

Modified: trunk/reactos/apps/utils/net/ping/ping.c

--- trunk/reactos/apps/utils/net/ping/ping.c	2005-12-27 23:25:04 UTC (rev 20385)
+++ trunk/reactos/apps/utils/net/ping/ping.c	2005-12-28 00:17:21 UTC (rev 20386)
@@ -182,7 +182,7 @@

     ULONG Value;
 
     i = 0;

-    Length = strlen(String);

+    Length = (UINT)_tcslen(String);

     while ((i < Length) && ((String[i] < '0') || (String[i] > '9'))) i++;
     if ((i >= Length) || ((String[i] < '0') || (String[i] > '9'))) {
         InvalidOption = TRUE;