mmap(win32): avoid copy-on-write when it is unnecessary

diff --git a/xdiff/xdiff.h b/xdiff/xdiff.h
index c0339919ccf78c4fe7d78123f9c3e891075d0602..4fb7e79410c22fba1fb390af2e09008e932f5ea8 100644 (file)
--- a/xdiff/xdiff.h
+++ b/xdiff/xdiff.h
@@ -42,7 +42,6 @@ extern "C" {
 #define XDF_IGNORE_BLANK_LINES (1 << 7)
 
 #define XDL_EMIT_FUNCNAMES (1 << 0)
-#define XDL_EMIT_COMMON (1 << 1)
 #define XDL_EMIT_FUNCCONTEXT (1 << 2)
 
 #define XDL_MMB_READONLY (1 << 0)