clang-tidy modernize-pass-by-value in jvmaccess

Change-Id: I9a2ef4370136b0f26ae3590f358025e7d89f30d2
Reviewed-on: https://gerrit.libreoffice.org/c/core/+/134757
Tested-by: Jenkins
Reviewed-by: Noel Grandin <noel.grandin@collabora.co.uk>

include/jvmaccess/unovirtualmachine.hxx

@@ -64,8 +64,7 @@ public:
         @exception CreationException
         Thrown in case creation fails (due to a JNI problem).
      */
-    UnoVirtualMachine(rtl::Reference<jvmaccess::VirtualMachine> const& virtualMachine,
-                      void* classLoader);
+    UnoVirtualMachine(rtl::Reference<jvmaccess::VirtualMachine> virtualMachine, void* classLoader);
 
     /** Get the Java virtual machine wrapper.
 

include/jvmaccess/virtualmachine.hxx

@@ -73,7 +73,7 @@ public:
             @exception CreationException
             Thrown in case attaching fails (due to a JNI problem).
          */
-        explicit AttachGuard(rtl::Reference<VirtualMachine> const& rMachine);
+        explicit AttachGuard(rtl::Reference<VirtualMachine> xMachine);
 
         /** Detach the current thread from the virtual machine again.
          */

jvmaccess/source/unovirtualmachine.cxx

@@ -23,6 +23,7 @@
 
 #include <jvmaccess/virtualmachine.hxx>
 #include <sal/log.hxx>
+#include <utility>
 
 #include <jni.h>
 
@@ -40,9 +41,9 @@ UnoVirtualMachine::CreationException::operator =(CreationException const &) {
 }
 
 UnoVirtualMachine::UnoVirtualMachine(
-    rtl::Reference< jvmaccess::VirtualMachine > const & virtualMachine,
+    rtl::Reference< jvmaccess::VirtualMachine > virtualMachine,
     void * classLoader):
-    m_virtualMachine(virtualMachine),
+    m_virtualMachine(std::move(virtualMachine)),
     m_classLoader(nullptr)
 {
     try {

jvmaccess/source/virtualmachine.cxx

@@ -23,6 +23,7 @@
 
 #include <jvmaccess/virtualmachine.hxx>
 #include <sal/log.hxx>
+#include <utility>
 
 using jvmaccess::VirtualMachine;
 
@@ -41,8 +42,8 @@ VirtualMachine::AttachGuard::CreationException::operator =(
 }
 
 VirtualMachine::AttachGuard::AttachGuard(
-    rtl::Reference< VirtualMachine > const & rMachine):
-    m_xMachine(rMachine)
+    rtl::Reference< VirtualMachine > xMachine):
+    m_xMachine(std::move(xMachine))
 {
     assert(m_xMachine.is());
     m_pEnvironment = m_xMachine->attachThread(&m_bDetach);