Remove UUID::SetFromCString

Replace uses with SetFromStringRef. NFC.

llvm-svn: 335246
diff --git a/lldb/source/Plugins/Process/gdb-remote/GDBRemoteCommunicationClient.cpp b/lldb/source/Plugins/Process/gdb-remote/GDBRemoteCommunicationClient.cpp
index 319fa65..c8b59d5 100644
--- a/lldb/source/Plugins/Process/gdb-remote/GDBRemoteCommunicationClient.cpp
+++ b/lldb/source/Plugins/Process/gdb-remote/GDBRemoteCommunicationClient.cpp
@@ -3541,7 +3541,7 @@
       StringExtractor extractor(value);
       std::string uuid;
       extractor.GetHexByteString(uuid);
-      module_spec.GetUUID().SetFromCString(uuid.c_str(), uuid.size() / 2);
+      module_spec.GetUUID().SetFromStringRef(uuid, uuid.size() / 2);
     } else if (name == "triple") {
       StringExtractor extractor(value);
       std::string triple;