dawn: Fix validation error message in ValidatePassTimestampWrites

This PR fix a ValidatePassTimestampWrites error message in which
beginningOfPassWriteIndex is misused as endOfPassWriteIndex.

Bug: dawn:1800
Change-Id: I722f04c375be96199768146ba14311c5d4a6e41d
Reviewed-on: https://dawn-review.googlesource.com/c/dawn/+/169860
Kokoro: Kokoro <noreply+kokoro@google.com>
Reviewed-by: Corentin Wallez <cwallez@chromium.org>
Commit-Queue: Zhaoming Jiang <zhaoming.jiang@intel.com>
Reviewed-by: Austin Eng <enga@chromium.org>
diff --git a/src/dawn/native/CommandValidation.cpp b/src/dawn/native/CommandValidation.cpp
index 10b91dc..60fb454 100644
--- a/src/dawn/native/CommandValidation.cpp
+++ b/src/dawn/native/CommandValidation.cpp
@@ -133,7 +133,7 @@
     if (endOfPassWriteIndex != wgpu::kQuerySetIndexUndefined) {
         DAWN_INVALID_IF(endOfPassWriteIndex >= querySet->GetQueryCount(),
                         "endOfPassWriteIndex (%u) exceeds the number of queries (%u) in %s.",
-                        beginningOfPassWriteIndex, querySet->GetQueryCount(), querySet);
+                        endOfPassWriteIndex, querySet->GetQueryCount(), querySet);
     }
 
     DAWN_INVALID_IF(beginningOfPassWriteIndex == wgpu::kQuerySetIndexUndefined &&