[libdmapsharing] Add missing include of string.h (thanks Vincent Untz)

[W. Michael Petullo <wmpetullo src gnome org>]

commit 009c9b71d84a169cb0f6b7e87986baf3d93821a0
Author: W. Michael Petullo <mike flyn org>
Date:   Mon Jul 4 09:04:47 2011 -0500

    Add missing include of string.h (thanks Vincent Untz)
    
    See also https://bugzilla.gnome.org/show_bug.cgi?id=653931.
    Signed-off-by: W. Michael Petullo <mike flyn org>

 tests/test-dmap-client.c |    1 +
 1 files changed, 1 insertions(+), 0 deletions(-)
---
diff --git a/tests/test-dmap-client.c b/tests/test-dmap-client.c
index 38c3057..4170a7e 100644
--- a/tests/test-dmap-client.c
+++ b/tests/test-dmap-client.c
@@ -20,6 +20,7 @@
 #include <glib.h>
 #include <stdio.h>
 #include <stdlib.h>
+#include <string.h>
 
 #include <libdmapsharing/dmap.h>