ffi_common.h_diff

diff --git a/jni/libffi/include/ffi_common.h b/jni/libffi/include/ffi_common.h
index d953762..8349909 100644
--- a/jni/libffi/include/ffi_common.h
+++ b/jni/libffi/include/ffi_common.h
@@ -16,32 +16,7 @@ extern "C" {
 
 #include <fficonfig.h>
 
-/* Do not move this. Some versions of AIX are very picky about where
-   this is positioned. */
-#ifdef __GNUC__
-/* mingw64 defines this already in malloc.h. */
-#ifndef alloca
-# define alloca __builtin_alloca
-#endif
-# define MAYBE_UNUSED __attribute__((__unused__))
-#else
-# define MAYBE_UNUSED
-# if HAVE_ALLOCA_H
-#  include <alloca.h>
-# else
-#  ifdef _AIX
- #pragma alloca
-#  else
-#   ifndef alloca /* predefined by HP cc +Olibcalls */
-#    ifdef _MSC_VER
-#     define alloca _alloca
-#    else
-char *alloca ();
-#    endif
-#   endif
-#  endif
-# endif
-#endif
+
 
 /* Check for the existence of memcpy. */
 #if STDC_HEADERS