input_common/CMakeLists: Make some warnings errors

Makes the input_common code warnings consistent with the rest of the
codebase.

1 files changed, 1 insertions, 1 deletions

diff --git a/src/input_common/motion_from_button.cpp b/src/input_common/motion_from_button.cpp
index 9d459f963..29045a673 100644
--- a/src/input_common/motion_from_button.cpp
+++ b/src/input_common/motion_from_button.cpp
@@ -11,7 +11,7 @@ class MotionKey final : public Input::MotionDevice {
 public:
     using Button = std::unique_ptr<Input::ButtonDevice>;
 
-    MotionKey(Button key_) : key(std::move(key_)) {}
+    explicit MotionKey(Button key_) : key(std::move(key_)) {}
 
     Input::MotionStatus GetStatus() const override {