tombstoned: silence spurious error messages. am: 8498016b81 am: 8fb50dc76c
am: 44877b9c29

Change-Id: I32f8ec5c1335589ba5999bb0377c7ad6b6d4d1e4
diff --git a/debuggerd/tombstoned/tombstoned.cpp b/debuggerd/tombstoned/tombstoned.cpp
index 63e3dbd..8705ece 100644
--- a/debuggerd/tombstoned/tombstoned.cpp
+++ b/debuggerd/tombstoned/tombstoned.cpp
@@ -85,7 +85,13 @@
     std::string path = android::base::StringPrintf("%stombstone_%02zu", kTombstoneDirectory, i);
     struct stat st;
     if (stat(path.c_str(), &st) != 0) {
-      PLOG(ERROR) << "failed to stat " << path;
+      if (errno == ENOENT) {
+        oldest_tombstone = i;
+        break;
+      } else {
+        PLOG(ERROR) << "failed to stat " << path;
+        continue;
+      }
     }
 
     if (st.st_mtime < oldest_time) {