Fix stray delete in Error move constructor
diff --git a/src/cxx.cc b/src/cxx.cc
index d18bec9..43bf245 100644
--- a/src/cxx.cc
+++ b/src/cxx.cc
@@ -180,7 +180,6 @@
 }
 
 Error::Error(Error &&other) noexcept {
-  delete[] this->msg.ptr;
   this->msg = other.msg;
   other.msg.ptr = nullptr;
   other.msg.len = 0;