Misc: Warning fixes

src/util/imgui_fullscreen.cpp

@@ -917,6 +917,8 @@ void ImGuiFullscreen::BeginMenuButtons(u32 num_items, float y_align, float x_pad
         case ImGuiDir_Down:
           ImGui::SetScrollY(std::min(ImGui::GetScrollY() + item_height, ImGui::GetScrollMaxY()));
           break;
+        default:
+          break;
       }
     }
 

src/util/vulkan_loader.h

@@ -73,12 +73,16 @@ class Error;
 #include "vulkan_entry_points.h"
 
 // We include vk_mem_alloc globally, so we don't accidentally include it before the vulkan header somewhere.
-#ifdef __clang__
+#if defined(__clang__)
 #pragma clang diagnostic push
 #pragma clang diagnostic ignored "-Wnullability-completeness"
 #pragma clang diagnostic ignored "-Wunused-variable"
 #pragma clang diagnostic ignored "-Wmissing-field-initializers"
 #pragma clang diagnostic ignored "-Wunused-function"
+#elif defined(__GNUC__)
+#pragma GCC diagnostic push
+#pragma GCC diagnostic ignored "-Wunused-variable"
+#pragma GCC diagnostic ignored "-Wunused-function"
 #elif defined(_MSC_VER)
 #pragma warning(push, 0)
 #endif
@@ -88,8 +92,10 @@ class Error;
 #define VMA_STATS_STRING_ENABLED 0
 #include "vulkan/vk_mem_alloc.h"
 
-#ifdef __clang__
+#if defined(__clang__)
 #pragma clang diagnostic pop
+#elif defined(__GNUC__)
+#pragma GCC diagnostic pop
 #elif defined(_MSC_VER)
 #pragma warning(pop)
 #endif