AK: Optional::operator=(Optional&&) should clear movee's has_value bit

We were forgetting to clear m_has_value in the Optional being moved
from when using operator=(Optional&&).

1 files changed, 1 insertions, 0 deletions

diff --git a/AK/Optional.h b/AK/Optional.h
index ee6320925e..a73db53bcc 100644
--- a/AK/Optional.h
+++ b/AK/Optional.h
@@ -104,6 +104,7 @@ public:
         ASSERT(m_has_value);
         T released_value = move(value());
         value().~T();
+        m_has_value = false;
         return released_value;
     }