tests: Use line width of 1.0f in ColorBlendLogicOpTests

Signed-off-by: Chris Forbes <chrisforbes@google.com>
diff --git a/tests/layer_validation_tests.cpp b/tests/layer_validation_tests.cpp
index 546474c..446758f 100644
--- a/tests/layer_validation_tests.cpp
+++ b/tests/layer_validation_tests.cpp
@@ -13940,6 +13940,7 @@
 
     VkPipelineRasterizationStateCreateInfo rs_ci = {};
     rs_ci.sType = VK_STRUCTURE_TYPE_PIPELINE_RASTERIZATION_STATE_CREATE_INFO;
+    rs_ci.lineWidth = 1.0f;
 
     VkPipelineColorBlendAttachmentState att = {};
     att.blendEnable = VK_FALSE;