Check for FindNextFile when defining it rather than FindFirstFile

Reviewed-by: Matt Caswell <matt@openssl.org>
diff --git a/crypto/LPdir_win.c b/crypto/LPdir_win.c
index d5b5e2c..7eea373 100644
--- a/crypto/LPdir_win.c
+++ b/crypto/LPdir_win.c
@@ -36,7 +36,7 @@
 #if defined(LP_SYS_WINCE) && !defined(FindFirstFile)
 # define FindFirstFile FindFirstFileW
 #endif
-#if defined(LP_SYS_WINCE) && !defined(FindFirstFile)
+#if defined(LP_SYS_WINCE) && !defined(FindNextFile)
 # define FindNextFile FindNextFileW
 #endif