Ensure the -Wno-strict-aliasing flag makes it, even if ASTCFLAGS has been specified.

When ASTCFLAGS was specified with the make command, Makefile.rules was using
the specified value from the command line and not the one here, making it so this
flag would go missing.


git-svn-id: https://origsvn.digium.com/svn/asterisk/trunk@267303 65c4cc65-6c06-0410-ace0-fbb531ad65f3

main/Makefile

@@ -102,7 +102,7 @@ editline/libedit.a: CHECK_SUBDIR
 	$(MAKE) -C editline libedit.a
 
 db1-ast/libdb1.a: CHECK_SUBDIR
-	_ASTCFLAGS="$(_ASTCFLAGS)" ASTCFLAGS="$(ASTCFLAGS) -Wno-strict-aliasing" $(MAKE) -C db1-ast libdb1.a
+	_ASTCFLAGS="$(_ASTCFLAGS) -Wno-strict-aliasing" ASTCFLAGS="$(ASTCFLAGS)" $(MAKE) -C db1-ast libdb1.a
 
 ifneq ($(findstring REBUILD_PARSERS,$(MENUSELECT_CFLAGS)),)
 ast_expr2.c ast_expr2.h: ast_expr2.y