Various miscelaneous changes (#6496)

src/citra_qt/debugger/ipc/recorder.h

@@ -4,9 +4,7 @@
 
 #pragma once
 
-#include <map>
 #include <memory>
-#include <unordered_map>
 #include <QDockWidget>
 #include "core/hle/kernel/ipc_debugger/recorder.h"
 

src/citra_qt/debugger/profiler.cpp

@@ -214,6 +214,7 @@ void MicroProfileDrawLine2D(u32 vertices_length, float* vertices, u32 hex_color)
     // the allocation across calls.
     static std::vector<QPointF> point_buf;
 
+    point_buf.reserve(vertices_length);
     for (u32 i = 0; i < vertices_length; ++i) {
         point_buf.emplace_back(vertices[i * 2 + 0], vertices[i * 2 + 1]);
     }

src/citra_qt/debugger/wait_tree.cpp

@@ -77,8 +77,9 @@ std::size_t WaitTreeItem::Row() const {
 }
 
 std::vector<std::unique_ptr<WaitTreeThread>> WaitTreeItem::MakeThreadItemList() {
-    u32 num_cores = Core::GetNumCores();
+    const u32 num_cores = Core::GetNumCores();
     std::vector<std::unique_ptr<WaitTreeThread>> item_list;
+    item_list.reserve(num_cores);
     for (u32 i = 0; i < num_cores; ++i) {
         const auto& threads =
             Core::System::GetInstance().Kernel().GetThreadManager(i).GetThreadList();