recovery: Reset optind to 1 after getopt

The getopt library exposes optind which is the
next index to be processed. When scanning is
restarted, optind has to be reset to 1.

Test: Recovery works
Bug: 78793464
Change-Id: I1efca3fb985ffbdfe91e43767469733cda6e7d5b
diff --git a/recovery_main.cpp b/recovery_main.cpp
index e21c782..5e82c6c 100644
--- a/recovery_main.cpp
+++ b/recovery_main.cpp
@@ -317,6 +317,7 @@
       }
     }
   }
+  optind = 1;
 
   if (locale.empty()) {
     if (has_cache) {