fix for mxf .a link in ffmpeg configure by iive

diff --git a/configure b/configure
index 056feea..267c823 100755
--- a/configure
+++ b/configure
@@ -923,8 +923,8 @@ check_ld(){
     log check_ld "$@"
     type=$1
     shift 1
-    flags=$(filter_out '-l*|*.so' $@)
-    libs=$(filter '-l*|*.so' $@)
+    flags=$(filter_out '-l*|*.so|*.a' $@)
+    libs=$(filter '-l*|*.so|*.a' $@)
     check_$type $($cflags_filter $flags) || return
     flags=$($ldflags_filter $flags)
     libs=$($ldflags_filter $libs)