Fix build with YASM


git-svn-id: svn://svn.code.sf.net/p/tigervnc/code/trunk@4116 3789f03b-4d11-0410-bbf8-ca57d06f2519
diff --git a/common/jpeg/simd/jdmrgmmx.asm b/common/jpeg/simd/jdmrgmmx.asm
index f5fa936..b5777a3 100644
--- a/common/jpeg/simd/jdmrgmmx.asm
+++ b/common/jpeg/simd/jdmrgmmx.asm
@@ -253,7 +253,7 @@
 	movq	MMWORD [edi+2*SIZEOF_MMWORD], mmC
 
 	sub	ecx, byte SIZEOF_MMWORD
-	jz	short .endcolumn
+	jz	near .endcolumn
 
 	add	edi, byte RGB_PIXELSIZE*SIZEOF_MMWORD	; outptr
 	add	esi, byte SIZEOF_MMWORD			; inptr0