Fix build on Fedora 22.

audio/speex/distinfo

@@ -1,6 +1,7 @@
-$NetBSD: distinfo,v 1.13 2009/05/09 13:22:55 joerg Exp $
+$NetBSD: distinfo,v 1.14 2014/01/01 03:03:01 ryoon Exp $
 
 SHA1 (speex-1.2rc1.tar.gz) = 52daa72572e844e5165315e208da539b2a55c5eb
 RMD160 (speex-1.2rc1.tar.gz) = 6f4a11ef910b0db9b820826bcac3da1b79cad3a1
 Size (speex-1.2rc1.tar.gz) = 1061882 bytes
 SHA1 (patch-ab) = 377ce413ee4a644327841597ba182f1b67e8eab8
+SHA1 (patch-libspeex_scal.c) = 25f6391b4500a35a04d4a5b12a3fb313778885f1

audio/speex/patches/patch-libspeex_scal.c

@@ -0,0 +1,19 @@
+$NetBSD: patch-libspeex_scal.c,v 1.1 2014/01/01 03:03:02 ryoon Exp $
+
+Fix build on Fedora 22.
+From upstream,
+http://git.xiph.org/?p=speex.git;a=commitdiff_plain;h=42ef4a1d79eb85d450686e633500bc85450d8036
+
+--- libspeex/scal.c.orig	2008-06-05 09:27:47.000000000 +0000
++++ libspeex/scal.c
+@@ -52,6 +52,10 @@ The algorithm implemented here is descri
+ #include <math.h>
+ #include <stdlib.h>
+ 
++#ifndef M_PI
++#define M_PI	3.14159265358979323846  /* pi */
++#endif
++
+ #define ALLPASS_ORDER 20
+ 
+ struct SpeexDecorrState_ {