unhookFunction - Make sure the trampoline isn't a nullptr

Author: Zephiles

ttyd-tools/rel/include/patch.h

@@ -56,6 +56,11 @@ Func hookFunction(Func function, Dest destination)
 template<typename Func>
 Func unhookFunction(Func trampoline)
 {
+    if (!trampoline)
+    {
+        return nullptr;
+    }
+    
     uint32_t *instructions = reinterpret_cast<uint32_t *>(trampoline);
 
     // Restore the original instruction