[gnome-shell] ShellRecorder: Include math.h for M_PI

[Owen Taylor <otaylor src gnome org>]

commit ad557a3515e0cce77b79668a8377d0461feb5245
Author: Guido Günther <agx sigxcpu org>
Date:   Wed Oct 6 12:37:50 2010 +0200

    ShellRecorder: Include math.h for M_PI
    
    https://bugzilla.gnome.org/show_bug.cgi?id=631510

 src/shell-recorder.c |    1 +
 1 files changed, 1 insertions(+), 0 deletions(-)
---
diff --git a/src/shell-recorder.c b/src/shell-recorder.c
index 8c1fb3f..a129f7d 100644
--- a/src/shell-recorder.c
+++ b/src/shell-recorder.c
@@ -3,6 +3,7 @@
 #include "config.h"
 
 #include <fcntl.h>
+#include <math.h>
 #include <stdio.h>
 #include <string.h>
 #include <unistd.h>