Print exit code != 0 in subproc_System
diff --git a/subproc.c b/subproc.c
index efb4eb2..e20450c 100644
--- a/subproc.c
+++ b/subproc.c
@@ -351,6 +351,7 @@
     LOG_D("Command '%s' exited with: %d", argv[0], WEXITSTATUS(status));
 
     if (WEXITSTATUS(status)) {
+        LOG_W("Command '%s' exited with code: %d", argv[0], WEXITSTATUS(status));
         return 1U;
     }