COMPMID-417: Fix PaddingCalculator

Change-Id: Idefa8c62d313e25808ea735c60967437035e266d
Reviewed-on: http://mpd-gerrit.cambridge.arm.com/78711
Reviewed-by: SiCong Li <sicong.li@arm.com>
Tested-by: Kaizen <jeremy.johnson+kaizengerrit@arm.com>
Reviewed-by: Georgios Pinitas <georgios.pinitas@arm.com>
diff --git a/tests/validation/NEON/Box3x3.cpp b/tests/validation/NEON/Box3x3.cpp
index 6c9c3b2..b2a66cd 100644
--- a/tests/validation/NEON/Box3x3.cpp
+++ b/tests/validation/NEON/Box3x3.cpp
@@ -112,15 +112,15 @@
     PaddingCalculator calculator(shape.x(), 8);
     calculator.set_border_size(1);
 
-    const PaddingSize write_padding(0, calculator.required_padding(), 0, 0);
+    const PaddingSize dst_padding = calculator.required_padding();
 
     calculator.set_accessed_elements(16);
     calculator.set_access_offset(-1);
 
-    const PaddingSize read_padding(0, calculator.required_padding(), 0, 0);
+    const PaddingSize src_padding = calculator.required_padding();
 
-    validate(src.info()->padding(), read_padding);
-    validate(dst.info()->padding(), write_padding);
+    validate(src.info()->padding(), src_padding);
+    validate(dst.info()->padding(), dst_padding);
 }
 
 BOOST_TEST_DECORATOR(*boost::unit_test::label("precommit"))