Fixes to get LLDB building on Windows again.

llvm-svn: 193159
diff --git a/lldb/source/Plugins/Process/gdb-remote/GDBRemoteCommunicationClient.cpp b/lldb/source/Plugins/Process/gdb-remote/GDBRemoteCommunicationClient.cpp
index 7761b16..dc4fa10 100644
--- a/lldb/source/Plugins/Process/gdb-remote/GDBRemoteCommunicationClient.cpp
+++ b/lldb/source/Plugins/Process/gdb-remote/GDBRemoteCommunicationClient.cpp
@@ -2596,7 +2596,7 @@
     {
         return ParseHostIOPacketResponse (response, -1, error) == 0;
     }
-    return UINT64_MAX;
+    return false;
 }
 
 // Extension of host I/O packets to get the file size.