RFR: 8336938: Update libFFI to 3.4.6

[Kevin Rushforth]

On Wed, 7 Aug 2024 00:26:13 GMT, Alexander Matveev <almatvee at openjdk.org> wrote:

> - libFFI updated to 3.4.6.
> - No additional changes are done.
> - Tested on Windows, macOS and Linux with all supported formats.

I see one minor difference between the upstream and your PR in a commented out line of code in `sysv_intel.S`. I don't know whether it is significant (I guess not, as long as it compiles with the current inline comment style).


diff -u -w -r ../../jfx-tmp/jfx/rt/modules/javafx.media/src/main/native/gstreamer/3rd_party/libffi/src/x86/sysv_intel.S ./src/x86/sysv_intel.S
--- ../../jfx-tmp/jfx/rt/modules/javafx.media/src/main/native/gstreamer/3rd_party/libffi/src/x86/sysv_intel.S   2024-08-12 15:59:14.597741100 -0700
+++ ./src/x86/sysv_intel.S      2024-08-12 16:05:42.708534300 -0700
@@ -102,7 +102,7 @@
         mov         ecx, [12+ebp]               /* load return type code */
         mov     [ebp+8], ebx            /* preserve %ebx */
 L(UW2):
-        // cfi_rel_offset(%ebx, 8)
+       /* cfi_rel_offset(%ebx, 8) */

         and     ecx, X86_RET_TYPE_MASK
         lea     ebx, [L(store_table) + ecx * 8]

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PR Comment: https://git.openjdk.org/jfx/pull/1531#issuecomment-2285054088