msvcrt: Don't forward strstr to ntdll.

dlls/msvcrt/msvcrt.spec

@@ -1437,7 +1437,7 @@
 @ cdecl strpbrk(str str) ntdll.strpbrk
 @ cdecl strrchr(str long) MSVCRT_strrchr
 @ cdecl strspn(str str) ntdll.strspn
-@ cdecl strstr(str str) ntdll.strstr
+@ cdecl strstr(str str) MSVCRT_strstr
 @ cdecl strtod(str ptr) MSVCRT_strtod
 @ cdecl strtok(str str) MSVCRT_strtok
 @ cdecl strtok_s(ptr str ptr) MSVCRT_strtok_s

dlls/msvcrt/string.c

@@ -1735,3 +1735,11 @@ int __cdecl MSVCRT__stricmp(const char *s1, const char *s2)
 {
     return MSVCRT__strnicmp_l(s1, s2, -1, NULL);
 }
+
+/*********************************************************************
+ *                  strstr   (MSVCRT.@)
+ */
+char* __cdecl MSVCRT_strstr(const char *haystack, const char *needle)
+{
+    return strstr(haystack, needle);
+}