5 files changed, 15 insertions, 11 deletions

diff --git a/src/common/concepts.h b/src/common/concepts.h
index 54252e778..5bef3ad67 100644
--- a/src/common/concepts.h
+++ b/src/common/concepts.h
@@ -4,10 +4,10 @@
 
 #pragma once
 
-namespace Common {
-
 #include <type_traits>
 
+namespace Common {
+
 // Check if type is like an STL container
 template <typename T>
 concept IsSTLContainer = requires(T t) {
diff --git a/src/common/dynamic_library.cpp b/src/common/dynamic_library.cpp
index 7ab54e9e4..7f0a10521 100644
--- a/src/common/dynamic_library.cpp
+++ b/src/common/dynamic_library.cpp
@@ -21,7 +21,7 @@ namespace Common {
 DynamicLibrary::DynamicLibrary() = default;
 
 DynamicLibrary::DynamicLibrary(const char* filename) {
-    Open(filename);
+    void(Open(filename));
 }
 
 DynamicLibrary::DynamicLibrary(DynamicLibrary&& rhs) noexcept
diff --git a/src/common/file_util.cpp b/src/common/file_util.cpp
index c869e7b82..16c3713e0 100644
--- a/src/common/file_util.cpp
+++ b/src/common/file_util.cpp
@@ -909,10 +909,10 @@ std::string SanitizePath(std::string_view path_, DirectorySeparator directory_se
     return std::string(RemoveTrailingSlash(path));
 }
 
-IOFile::IOFile() {}
+IOFile::IOFile() = default;
 
 IOFile::IOFile(const std::string& filename, const char openmode[], int flags) {
-    Open(filename, openmode, flags);
+    void(Open(filename, openmode, flags));
 }
 
 IOFile::~IOFile() {
diff --git a/src/common/time_zone.cpp b/src/common/time_zone.cpp
index 7aa1b59ea..ce239eb63 100644
--- a/src/common/time_zone.cpp
+++ b/src/common/time_zone.cpp
@@ -3,9 +3,8 @@
 // Refer to the license.txt file included.
 
 #include <chrono>
-#include <ctime>
-
-#include <fmt/chrono.h>
+#include <iomanip>
+#include <sstream>
 
 #include "common/logging/log.h"
 #include "common/time_zone.h"
@@ -17,8 +16,13 @@ std::string GetDefaultTimeZone() {
 }
 
 static std::string GetOsTimeZoneOffset() {
-    // Get the current timezone offset, e.g. "-400", as a string
-    return fmt::format("%z", fmt::localtime(std::time(nullptr)));
+    const std::time_t t{std::time(nullptr)};
+    const std::tm tm{*std::localtime(&t)};
+
+    std::stringstream ss;
+    ss << std::put_time(&tm, "%z"); // Get the current timezone offset, e.g. "-400", as a string
+
+    return ss.str();
 }
 
 static int ConvertOsTimeZoneOffsetToInt(const std::string& timezone) {
diff --git a/src/video_core/renderer_vulkan/wrapper.cpp b/src/video_core/renderer_vulkan/wrapper.cpp
index c43d60adf..013865aa4 100644
--- a/src/video_core/renderer_vulkan/wrapper.cpp
+++ b/src/video_core/renderer_vulkan/wrapper.cpp
@@ -786,7 +786,7 @@ std::optional<std::vector<VkExtensionProperties>> EnumerateInstanceExtensionProp
         VK_SUCCESS) {
         return std::nullopt;
     }
-    return properties;
+    return std::move(properties);
 }
 
 std::optional<std::vector<VkLayerProperties>> EnumerateInstanceLayerProperties(