[libFuzzer] tolerate missing files when loading the seed corpus

llvm-svn: 312269
diff --git a/compiler-rt/lib/fuzzer/FuzzerLoop.cpp b/compiler-rt/lib/fuzzer/FuzzerLoop.cpp
index 97fc31c..0354fc8 100644
--- a/compiler-rt/lib/fuzzer/FuzzerLoop.cpp
+++ b/compiler-rt/lib/fuzzer/FuzzerLoop.cpp
@@ -638,7 +638,7 @@
 
     // Load and execute inputs one by one.
     for (auto &SF : SizedFiles) {
-      auto U = FileToVector(SF.File, MaxInputLen);
+      auto U = FileToVector(SF.File, MaxInputLen, /*ExitOnError=*/false);
       assert(U.size() <= MaxInputLen);
       RunOne(U.data(), U.size());
       CheckExitOnSrcPosOrItem();