[balsa] Missing include

[Peter Bloomfield <PeterB src gnome org>]

commit d4cad06abcd07b71023016c2e33d13b560da0f29
Author: Peter Bloomfield <PeterBloomfield bellsouth net>
Date:   Tue Mar 23 09:08:23 2010 -0400

    Missing include

 ChangeLog  |    4 ++++
 src/main.c |    1 +
 2 files changed, 5 insertions(+), 0 deletions(-)
---
diff --git a/ChangeLog b/ChangeLog
index 1affed9..2532828 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,5 +1,9 @@
 2010-03-23  Peter Bloomfield
 
+	* src/main.c: missing include.
+
+2010-03-23  Peter Bloomfield
+
 	* configure.in: use single-includes.
 
 2010-03-20  Peter Bloomfield
diff --git a/src/main.c b/src/main.c
index 2775f85..4803629 100644
--- a/src/main.c
+++ b/src/main.c
@@ -38,6 +38,7 @@
 
 #include <signal.h>
 #include <stdlib.h>
+#include <unistd.h>
 
 #ifdef BALSA_USE_THREADS
 #include <pthread.h>