vold: fix errors inside ALOGV

Fix errors exposed by adding compile-time checking to disabled ALOGVs.

Change-Id: I29bd6e9a7648ccca02e0e9a96b79ee0ea7b5cfc6
diff --git a/Volume.cpp b/Volume.cpp
index c290200..80552b6 100644
--- a/Volume.cpp
+++ b/Volume.cpp
@@ -378,14 +378,14 @@
 
        if (n != 1) {
            /* We only expect one device node returned when mounting encryptable volumes */
-           SLOGE("Too many device nodes returned when mounting %d\n", getMountpoint());
+           SLOGE("Too many device nodes returned when mounting %s\n", getMountpoint());
            return -1;
        }
 
        if (cryptfs_setup_volume(getLabel(), MAJOR(deviceNodes[0]), MINOR(deviceNodes[0]),
                                 new_sys_path, sizeof(new_sys_path),
                                 &new_major, &new_minor)) {
-           SLOGE("Cannot setup encryption mapping for %d\n", getMountpoint());
+           SLOGE("Cannot setup encryption mapping for %s\n", getMountpoint());
            return -1;
        }
        /* We now have the new sysfs path for the decrypted block device, and the