add windows.h include to ctx.c to satisfy dependencies and move internal.h include at end of includes

git-svn-id: https://www.opensc-project.org/svnp/opensc/trunk@4092 c6295689-39f2-0310-b995-f0e70906c6a9

src/libopensc/ctx.c

@@ -29,12 +29,13 @@
 #include <limits.h>
 #include <ltdl.h>
 
-#include "internal.h"
-
 #ifdef _WIN32
+#include <windows.h>
 #include <winreg.h>
 #endif
 
+#include "internal.h"
+
 int _sc_add_reader(sc_context_t *ctx, sc_reader_t *reader)
 {
 	assert(reader != NULL);