configure: fix disabled_any to return false for empty list

Originally committed as revision 15683 to svn://svn.ffmpeg.org/ffmpeg/trunk

diff --git a/configure b/configure
index 111131f..8fdfe7b 100755 (executable)
--- a/configure
+++ b/configure
@@ -309,6 +309,7 @@ disabled_any(){
     for opt; do
         disabled $opt && return 0
     done
+    return 1
 }
 
 set_default(){