Fix type conversion warnings
diff --git a/external/vulkancts/modules/vulkan/api/vktApiBufferTests.cpp b/external/vulkancts/modules/vulkan/api/vktApiBufferTests.cpp
index 2d9302c..6b36cce 100644
--- a/external/vulkancts/modules/vulkan/api/vktApiBufferTests.cpp
+++ b/external/vulkancts/modules/vulkan/api/vktApiBufferTests.cpp
@@ -144,7 +144,7 @@
 			VK_STRUCTURE_TYPE_MEMORY_ALLOCATE_INFO,
 			NULL,
 			memReqs.size,
-			deCtz32(memReqs.memoryTypeBits)				//	deUint32		memoryTypeIndex
+			(deUint32)deCtz32(memReqs.memoryTypeBits)	//	deUint32		memoryTypeIndex
 		};
 
 		try
diff --git a/external/vulkancts/modules/vulkan/api/vktApiBufferViewCreateTests.cpp b/external/vulkancts/modules/vulkan/api/vktApiBufferViewCreateTests.cpp
index c6265e6..97ace97 100644
--- a/external/vulkancts/modules/vulkan/api/vktApiBufferViewCreateTests.cpp
+++ b/external/vulkancts/modules/vulkan/api/vktApiBufferViewCreateTests.cpp
@@ -147,7 +147,7 @@
 		VK_STRUCTURE_TYPE_MEMORY_ALLOCATE_INFO,		//	VkStructureType		sType
 		NULL,										//	const void*			pNext
 		memReqs.size,								//	VkDeviceSize		allocationSize
-		deCtz32(memReqs.memoryTypeBits)				//	deUint32			memoryTypeIndex
+		(deUint32)deCtz32(memReqs.memoryTypeBits)	//	deUint32			memoryTypeIndex
 	};
 
 	{