[lasem] Fix missing prototype

[J.H.M. Dassen (Ray) <jdassen src gnome org>]

commit 07624450987c2bbb06e5d782e93d00142ec33e02
Author: J.H.M. Dassen (Ray) <jdassen debian org>
Date:   Tue Jan 1 11:53:48 2013 +0100

    Fix missing prototype

 src/lsm.c |    1 +
 1 files changed, 1 insertions(+), 0 deletions(-)
---
diff --git a/src/lsm.c b/src/lsm.c
index ac56028..888481c 100644
--- a/src/lsm.c
+++ b/src/lsm.c
@@ -22,6 +22,7 @@
  */
 
 #include <lsmdomimplementation.h>
+#include <lsm.h>
 
 void
 lsm_shutdown (void)