fix(bt/osi): add NULL check in osi_mutex_free and osi_sem_free (IDFGH-16853)

(cherry picked from commit 8630040602)

Co-authored-by: zhanghaipeng <zhanghaipeng@espressif.com>

components/bt/common/osi/mutex.c

@@ -65,10 +65,15 @@ void osi_mutex_unlock(osi_mutex_t *mutex)
     xSemaphoreGive(*mutex);
 }
 
-/** Delete a semaphore
+/** Delete a mutex
- * @param mutex the mutex to delete */
+ * @param mutex the mutex to delete
+ * Note: Safe to call with NULL or uninitialized mutex (IDFGH-16853)
+ */
 void osi_mutex_free(osi_mutex_t *mutex)
 {
+    if (mutex == NULL || *mutex == NULL) {
+        return;
+    }
     vSemaphoreDelete(*mutex);
     *mutex = NULL;
 }

components/bt/common/osi/semaphore.c

@@ -69,9 +69,15 @@ osi_sem_take(osi_sem_t *sem, uint32_t timeout)
     return ret;
 }
 
-// Deallocates a semaphore
+/** Deallocates a semaphore
+ * @param sem the semaphore to delete
+ * Note: Safe to call with NULL or uninitialized semaphore (IDFGH-16853)
+ */
 void osi_sem_free(osi_sem_t *sem)
 {
+    if (sem == NULL || *sem == NULL) {
+        return;
+    }
     vSemaphoreDelete(*sem);
     *sem = NULL;
 }