Use volatile for ksu_fd

Author: frknkrc44

daemon/src/main/jni/denylist.cpp

@@ -90,20 +90,14 @@ bool exec_command(char *buf, size_t len, const char *file, const char *argv[]) {
  */
 static int root_impl = -1;
 
-static int ksu_fd = -1;
+volatile int ksu_fd = -1;
 
 static bool prepare_ksu_fd() {
     if (ksu_fd >= 0) return true;
 
     LOGD("Prepare KSU fd: Trying to send ksu option");
 
-    syscall(
-            SYS_reboot,
-            KSU_INSTALL_MAGIC1,
-            KSU_INSTALL_MAGIC2,
-            0,
-            (void *)&ksu_fd
-    );
+    syscall(SYS_reboot, KSU_INSTALL_MAGIC1, KSU_INSTALL_MAGIC2, 0, (void*)&ksu_fd);
 
     LOGD("Prepare KSU fd: %x", ksu_fd);