video_core/control_flow: Remove unnecessary BlockStack copy constructor

This is the default behavior of the copy constructor, so it doesn't need
to be specified.

While we're at it we can make the other non-default constructor
explicit.

1 files changed, 1 insertions, 2 deletions

diff --git a/src/video_core/shader/control_flow.cpp b/src/video_core/shader/control_flow.cpp
index 4d500320a..37792d420 100644
--- a/src/video_core/shader/control_flow.cpp
+++ b/src/video_core/shader/control_flow.cpp
@@ -29,8 +29,7 @@ struct Query {
 
 struct BlockStack {
     BlockStack() = default;
-    BlockStack(const BlockStack& b) = default;
-    BlockStack(const Query& q) : ssy_stack{q.ssy_stack}, pbk_stack{q.pbk_stack} {}
+    explicit BlockStack(const Query& q) : ssy_stack{q.ssy_stack}, pbk_stack{q.pbk_stack} {}
     std::stack<u32> ssy_stack{};
     std::stack<u32> pbk_stack{};
 };