vold: Fix share status argument off by one

Signed-off-by: San Mehat <san@google.com>
diff --git a/CommandListener.cpp b/CommandListener.cpp
index bb503d3..a40eac2 100644
--- a/CommandListener.cpp
+++ b/CommandListener.cpp
@@ -67,7 +67,7 @@
     } else if (!strcmp(argv[1], "shared")) {
         bool enabled = false;
 
-        if (vm->shareEnabled(argv[1], argv[2], &enabled)) {
+        if (vm->shareEnabled(argv[2], argv[3], &enabled)) {
             cli->sendMsg(
                     ResponseCode::OperationFailed, "Failed to determine share enable state", true);
         } else {