gptfdisk: fix stack overflow in parsing cmdline am: 69e46b9a am: 8c834de1

am: ff3551bb

Change-Id: I6678487f46848c2de3d77bf7a75ec67634c82921

android_popt.cc

@@ -98,7 +98,7 @@ int poptGetNextOpt(poptContext con) {
 #ifdef LOCAL_DEBUG
     fprintf(stderr, "getopt_long()=%c\n", res);
 #endif
-    if (res == 0 || res == '?') {
+    if (res <= 0 || res == '?' || i == -1) {
         return -1;
     }