Fixed some issues found by winapi_check.

loader/pe_image.c

diff --git a/loader/pe_image.c b/loader/pe_image.c
index 4267c5c..35bbc0f 100644
--- a/loader/pe_image.c
+++ b/loader/pe_image.c
@@ -23,6 +23,8 @@
  *   NE_MODULE.module32.
  */
 
+#include "config.h"
+
 #include <sys/types.h>
 #ifdef HAVE_SYS_MMAN_H
 #include <sys/mman.h>