Skip `missing` error from genhtml am: 8f828a3d21

Original change: https://android-review.googlesource.com/c/platform/tools/asuite/+/3502459

Change-Id: I2520a8ed6a094f39847539c80205158ca4308dae
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>
diff --git a/atest/coverage/coverage.py b/atest/coverage/coverage.py
index b1c49f0..c154636 100644
--- a/atest/coverage/coverage.py
+++ b/atest/coverage/coverage.py
@@ -389,7 +389,7 @@
       # TODO(b/361334044): These errors are ignored to continue to generate a
       # flawed result but ultimately need to be resolved, see bug for details.
       '--ignore-errors',
-      'unmapped,range,empty,corrupt',
+      'unmapped,range,empty,corrupt,missing',
   ]
   if root_dir:
     cmd.extend(['-p', root_dir])