simplify condition

git-svn-id: file:///var/local/repositories/ffmpeg/trunk@7751 9553f0bf-9b14-0410-a0b8-cfaf0461ba5b

configure

@@ -1535,7 +1535,7 @@ fi
 check_header malloc.h
 check_func memalign
 
-if disabled_all memalign memalign_hack && enabled_all need_memalign ; then
+if disabled_all memalign memalign_hack && enabled need_memalign ; then
     die "Error, no memalign() but SSE enabled, disable it or use --enable-memalign-hack."
 fi