libvulkan: Load layer libraries into the app namespace

Bug: 28213888
Change-Id: I79901693c30f0e69730643b424e504a8d3628624
diff --git a/vulkan/libvulkan/vulkan_loader_data.cpp b/vulkan/libvulkan/vulkan_loader_data.cpp
index a6a0295..0eda0af 100644
--- a/vulkan/libvulkan/vulkan_loader_data.cpp
+++ b/vulkan/libvulkan/vulkan_loader_data.cpp
@@ -19,6 +19,6 @@
 using namespace vulkan;
 
 LoaderData& LoaderData::GetInstance() {
-    static LoaderData loader_data;
+    static LoaderData loader_data = {};
     return loader_data;
 }