loplugin:passstuffbyref in jvmaccess

Change-Id: I0c5daabe31393db08654dd9f22abc757f6c67d4c

include/jvmaccess/unovirtualmachine.hxx

@@ -74,7 +74,7 @@ public:
         @return
         The Java virtual machine wrapper.  Will never be null.
      */
-    rtl::Reference< jvmaccess::VirtualMachine > getVirtualMachine() const;
+    const rtl::Reference< jvmaccess::VirtualMachine >& getVirtualMachine() const;
 
     /** Get the UNO class loader.
 

jvmaccess/source/unovirtualmachine.cxx

@@ -57,7 +57,7 @@ UnoVirtualMachine::UnoVirtualMachine(
     }
 }
 
-rtl::Reference< jvmaccess::VirtualMachine >
+const rtl::Reference< jvmaccess::VirtualMachine >&
 UnoVirtualMachine::getVirtualMachine() const {
     return m_virtualMachine;
 }