Index: crt/string/strtoul.c
===================================================================
--- crt/string/strtoul.c	(revision 71259)
+++ crt/string/strtoul.c	(working copy)
@@ -1,6 +1,6 @@
 #include <precomp.h>
 
-/* Based on Wine Staging 1.7.37 - dlls/msvcrt/string.c */
+/* Based on Wine Staging 1.9.9 - dlls/msvcrt/string.c */
 
 /*********************************************************************
  *  _strtoi64_l (MSVCRT.@)
@@ -9,7 +9,9 @@
  */
 __int64 CDECL strtoi64_l(const char *nptr, char **endptr, int base, _locale_t locale)
 {
+    const char *p = nptr;
     BOOL negative = FALSE;
+    BOOL got_digit = FALSE;
     __int64 ret = 0;
 
 #ifndef _LIBCNT_
@@ -53,6 +55,7 @@
                 break;
             v = cur-'a'+10;
         }
+        got_digit = TRUE;
 
         if(negative)
             v = -v;
@@ -74,7 +77,7 @@
     }
 
     if(endptr)
-        *endptr = (char*)nptr;
+        *endptr = (char*)(got_digit ? nptr : p);
 
     return ret;
 }