ideviceimagemounter: Add missing libgen.h header include
diff --git a/tools/ideviceimagemounter.c b/tools/ideviceimagemounter.c
index 6b9cb88..3d299f8 100644
--- a/tools/ideviceimagemounter.c
+++ b/tools/ideviceimagemounter.c
@@ -29,6 +29,7 @@
 #include <getopt.h>
 #include <errno.h>
 #include <glib.h>
+#include <libgen.h>
 
 #include <libimobiledevice/libimobiledevice.h>
 #include <libimobiledevice/lockdown.h>