Disk cache: Fix a signed / unsigned comparison on cl 17052

net/disk_cache/backend_impl.cc

Index: net/disk_cache/backend_impl.cc
===================================================================
--- net/disk_cache/backend_impl.cc	(revision 17052)
+++ net/disk_cache/backend_impl.cc	(working copy)
@@ -789,7 +789,7 @@
   ReportError(error);
 
   // Reset the mask_ if it was not given by the user.
-  if (mask_ == data_->header.table_len - 1)
+  if (static_cast<int>(mask_) == data_->header.table_len - 1)
     mask_ = 0;
 
   // Setting the index table length to an invalid value will force re-creation
@@ -988,7 +988,7 @@
 
 void BackendImpl::PrepareForRestart() {
   // Reset the mask_ if it was not given by the user.
-  if (mask_ == data_->header.table_len - 1)
+  if (static_cast<int>(mask_) == data_->header.table_len - 1)
     mask_ = 0;
 
   data_->header.crash = 0;