fix underflow on input clipboard allow state

2 files changed, 5 insertions, 1 deletions

diff --git a/source/game/StarInput.cpp b/source/game/StarInput.cpp
index d47045d..dec6705 100644
--- a/source/game/StarInput.cpp
+++ b/source/game/StarInput.cpp
@@ -688,7 +688,10 @@ unsigned Input::getTag(String const& tagName) const {
 Input::ClipboardUnlock::ClipboardUnlock(Input& input)
     : m_input(&input) { ++m_input->m_clipboardAllowed; };
 
-Input::ClipboardUnlock::~ClipboardUnlock() { --m_input->m_clipboardAllowed; };
+Input::ClipboardUnlock::ClipboardUnlock(ClipboardUnlock&& other) { m_input = take(other.m_input); };
+
+Input::ClipboardUnlock::~ClipboardUnlock() { if (m_input) --m_input->m_clipboardAllowed; };
+
 
 Input::ClipboardUnlock Input::unlockClipboard() {
   return Input::ClipboardUnlock(*this);
diff --git a/source/game/StarInput.hpp b/source/game/StarInput.hpp
index 1746739..05b20eb 100644
--- a/source/game/StarInput.hpp
+++ b/source/game/StarInput.hpp
@@ -184,6 +184,7 @@ public:
   class ClipboardUnlock {
   public:
     ClipboardUnlock(Input& input);
+    ClipboardUnlock(ClipboardUnlock&&);
     ~ClipboardUnlock();
 
   private: