BUILD: fix dragonfly build again on __read_mostly

It looks like some versions define it and others not. Better rely on
the macro itself rather than checking for a particular OS.

diff --git a/include/haproxy/compiler.h b/include/haproxy/compiler.h
index ca3b844c15d71ff40e5b520a810345618591a4eb..1f0c40db91f70bc5d5fb958dd8a2ee0824be904e 100644 (file)
--- a/include/haproxy/compiler.h
+++ b/include/haproxy/compiler.h
@@ -89,7 +89,7 @@
 #endif // USE_OBSOLETE_LINKER
 
 /* use this attribute on a variable to move it to the read_mostly section */
-#if !defined(__DragonFly__)
+#if !defined(__read_mostly)
 #define __read_mostly           HA_SECTION("read_mostly")
 #endif