usb: fix hang when disconnecting from USB

commit 2556cfc7b33e3990e53671649cab1e6aa63718ba
Author: Christian Soffke <[email protected]>
Date:   Fri Jan 30 13:48:23 2026 +0100

    usb: fix hang when disconnecting from USB
    
    regression introduced in 33d0a3efa3
    
    Change-Id: I0ded61d70a09b27820e65979381d2c38410d2923

diff --git a/firmware/usb.c b/firmware/usb.c
index c088db4ef1..e1d0909613 100644
--- a/firmware/usb.c
+++ b/firmware/usb.c
@@ -877,6 +877,7 @@ void usb_request_exclusive_storage(void)
 
 void usb_release_exclusive_storage(void)
 {
+    int bccount;
     if(!exclusive_storage_requested) {
         return;
     }
@@ -887,10 +888,12 @@ void usb_release_exclusive_storage(void)
     }
     exclusive_storage_enabled = false;
 
-#ifdef DEBUG
     /* Tell all threads that we are back in business */
-    int bccount = queue_broadcast(SYS_USB_DISCONNECTED, 0) - 1;
+    bccount = queue_broadcast(SYS_USB_DISCONNECTED, 0) - 1;
+#ifdef DEBUG
     DEBUGF("USB extracted. Broadcast to %d threads...\n", bccount);
+#else
+    (void)bccount;
 #endif
     return;
 }
-- 
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