1 files changed, 11 insertions, 9 deletions

diff --git a/slock.c b/slock.c
index 97c7489..0682279 100644
--- a/slock.c
+++ b/slock.c
@@ -234,6 +234,11 @@ unlockscreen(Display *dpy, Lock *lock)
 static void
 cleanup(Display *dpy)
 {
+        int s;
+
+        for (s = 0; s < nscreens; ++s)
+                unlockscreen(dpy, locks[s]);
+
         free(locks);
         XCloseDisplay(dpy);
 }
@@ -305,8 +310,6 @@ lockscreen(Display *dpy, int screen)
                 fprintf(stderr, "slock: unable to grab mouse pointer for screen %d\n", screen);
         if (kbgrab != GrabSuccess)
                 fprintf(stderr, "slock: unable to grab keyboard for screen %d\n", screen);
-        running = 0;
-        unlockscreen(dpy, lock);
         return NULL;
 }
 
@@ -359,19 +362,21 @@ main(int argc, char **argv) {
 
         /* get number of screens in display "dpy" and blank them */
         nscreens = ScreenCount(dpy);
-        if (!(locks = malloc(sizeof(Lock *) * nscreens))) {
+        if (!(locks = calloc(nscreens, sizeof(Lock *)))) {
                 XCloseDisplay(dpy);
                 die("slock: out of memory\n");
         }
         for (nlocks = 0, s = 0; s < nscreens; s++) {
                 if ((locks[s] = lockscreen(dpy, s)) != NULL)
                         nlocks++;
+                else
+                        break;
         }
         XSync(dpy, 0);
 
-        /* did we actually manage to lock anything? */
-        if (nlocks == 0) {
-                /* nothing to protect */
+        /* did we manage to lock everything? */
+        if (nlocks != nscreens) {
+                running = 0;
                 cleanup(dpy);
                 return 1;
         }
@@ -400,9 +405,6 @@ main(int argc, char **argv) {
 #endif
 
         /* password ok, unlock everything and quit */
-        for (s = 0; s < nscreens; s++)
-                unlockscreen(dpy, locks[s]);
-
         cleanup(dpy);
 
         return 0;