valgrind_fuse: only wait 10 seconds for fuse to be mounted

tests/valgrind_fuse.sh

@@ -33,12 +33,20 @@ $cmd "${binary_dir}/mediafire-fuse" -s -f -d /mnt &
 fusepid="$!"
 
 # once the file system is found to be mounted, print the tree and unmount
-while sleep 1; do
+for i in `seq 1 10`; do
+	sleep 1
 	if [ `mount -t fuse.mediafire-fuse | wc -l` -ne 0 ]; then
 		break;
 	fi
 done
 
+if [ `mount -t fuse.mediafire-fuse | wc -l` -eq 0 ]; then
+	echo "cannot mount fuse" >&2
+	fusermount -u /mnt
+	wait "$fusepid"
+	exit 1
+fi
+
 tree /mnt
 
 fusermount -u /mnt