corechecks: Invalid error message in vkCmdPipelineBarrier

Change-Id: Icc6a9ab5aa827dd3d8ca51588ddb26890d9be859

layers/core_validation.cpp

diff --git a/layers/core_validation.cpp b/layers/core_validation.cpp
index 22181eb..1eaa967 100644
--- a/layers/core_validation.cpp
+++ b/layers/core_validation.cpp
@@ -6734,10 +6734,12 @@
     assert(cb_state);
 
     bool skip = false;
-    auto barrier_op_type = ComputeBarrierOperationsType(cb_state, bufferMemoryBarrierCount, pBufferMemoryBarriers,
-                                                        imageMemoryBarrierCount, pImageMemoryBarriers);
-    skip |= ValidateStageMasksAgainstQueueCapabilities(cb_state, srcStageMask, dstStageMask, barrier_op_type,
-                                                       "vkCmdPipelineBarrier", "VUID-vkCmdPipelineBarrier-srcStageMask-01183");
+    if (bufferMemoryBarrierCount || imageMemoryBarrierCount) {
+        auto barrier_op_type = ComputeBarrierOperationsType(cb_state, bufferMemoryBarrierCount, pBufferMemoryBarriers,
+                                                            imageMemoryBarrierCount, pImageMemoryBarriers);
+        skip |= ValidateStageMasksAgainstQueueCapabilities(cb_state, srcStageMask, dstStageMask, barrier_op_type,
+                                                           "vkCmdPipelineBarrier", "VUID-vkCmdPipelineBarrier-srcStageMask-01183");
+    }
     skip |= ValidateCmdQueueFlags(cb_state, "vkCmdPipelineBarrier()",
                                   VK_QUEUE_TRANSFER_BIT | VK_QUEUE_GRAPHICS_BIT | VK_QUEUE_COMPUTE_BIT,
                                   "VUID-vkCmdPipelineBarrier-commandBuffer-cmdpool");