x86_abi_support: do not decorate coff functions

:private_extern only applies to macho. Match x86inc.asm logic:
%if FORMAT_ELF
  global %2:function hidden
%elif FORMAT_MACHO
  global %2:private_extern
%else
  global %2
%endif

May fix a build issue on windows:
vp8/encoder/x86/block_error_sse2.asm:18: error:
  COFF format does not support any special symbol types

BUG=webm:1679

Change-Id: I7e1f4043b064a04752d1cedd030cbe7f5461fe40

diff --git a/vpx_ports/x86_abi_support.asm b/vpx_ports/x86_abi_support.asm
index e35589065b5ec0b8729a66096f6082cae3be2170..420aa668d45b28bb5336dd88f1606e420474223d 100644 (file)
--- a/vpx_ports/x86_abi_support.asm
+++ b/vpx_ports/x86_abi_support.asm
@@ -132,10 +132,12 @@
     %define PRIVATE :function hidden
   %elifidn __OUTPUT_FORMAT__,elfx32
     %define PRIVATE :function hidden
-  %elif LIBVPX_YASM_WIN64
-    %define PRIVATE
-  %else
+  %elifidn __OUTPUT_FORMAT__,macho32
     %define PRIVATE :private_extern
+  %elifidn __OUTPUT_FORMAT__,macho64
+    %define PRIVATE :private_extern
+  %else
+    %define PRIVATE
   %endif
 %else
   %define PRIVATE