tests: Fix uninitialized pDataSize for GetImageSubres and GetObjectInfo
diff --git a/tests/blit_tests.cpp b/tests/blit_tests.cpp
index 56213d7..d5b6793 100644
--- a/tests/blit_tests.cpp
+++ b/tests/blit_tests.cpp
@@ -350,7 +350,7 @@
 
     {
         XGL_SUBRESOURCE_LAYOUT layout;
-        XGL_SIZE layout_size;
+        XGL_SIZE layout_size= sizeof(layout);
         XGL_UINT x, y;
         void *data;
 
@@ -428,7 +428,7 @@
      */
     {
         XGL_SUBRESOURCE_LAYOUT layout;
-        XGL_SIZE layout_size;
+        XGL_SIZE layout_size = sizeof(layout);
         XGL_UINT x, y;
         void *data;
 
diff --git a/tests/compiler_render_tests.cpp b/tests/compiler_render_tests.cpp
index fc74aeb..1a36e0f 100644
--- a/tests/compiler_render_tests.cpp
+++ b/tests/compiler_render_tests.cpp
@@ -322,7 +322,7 @@
             view.minLod = 0.0f;
 
         XGL_MEMORY_REQUIREMENTS mem_reqs;
-        XGL_SIZE mem_reqs_size;
+        XGL_SIZE mem_reqs_size= sizeof(XGL_MEMORY_REQUIREMENTS);
 
         /* create image */
         err = xglCreateImage(device(), &image, &m_texture[textureSlot]);
@@ -360,7 +360,7 @@
             .arraySlice = 0,
         };
         XGL_SUBRESOURCE_LAYOUT layout;
-        XGL_SIZE layout_size;
+        XGL_SIZE layout_size = sizeof(layout);
         XGL_VOID *data;
         XGL_INT x, y;
 
diff --git a/tests/render_tests.cpp b/tests/render_tests.cpp
index fbbbe97..2f9fd5b 100644
--- a/tests/render_tests.cpp
+++ b/tests/render_tests.cpp
@@ -413,7 +413,7 @@
             view.minLod = 0.0f;
 
         XGL_MEMORY_REQUIREMENTS mem_reqs;
-        XGL_SIZE mem_reqs_size;
+        XGL_SIZE mem_reqs_size=sizeof(XGL_MEMORY_REQUIREMENTS);
 
         /* create sampler */
         err = xglCreateSampler(device(), &sampler, &m_sampler);
@@ -1409,7 +1409,7 @@
     XGL_MEMORY_ALLOC_INFO mem_alloc;
     XGL_DEPTH_STENCIL_VIEW_CREATE_INFO view;
     XGL_MEMORY_REQUIREMENTS mem_reqs;
-    XGL_SIZE mem_reqs_size;
+    XGL_SIZE mem_reqs_size=sizeof(XGL_MEMORY_REQUIREMENTS);
 
     // Clean up default state created by framework
     if (m_stateDepthStencil) xglDestroyObject(m_stateDepthStencil);