Avoid redefinition warnings of NOMINMAX if you've already defined it.

hrydgard · hrydgard · commit 14f79094d4f9 · 2018-09-24T11:18:41.000+02:00
diff --git a/src/vk_mem_alloc.h b/src/vk_mem_alloc.h
@@ -1369,7 +1369,9 @@ available through VmaAllocatorCreateInfo::pRecordSettings.
     #endif
 #endif
 
+#ifndef NOMINMAX
 #define NOMINMAX // For Windows.h
+#endif
 
 #include <vulkan/vulkan.h>
 
