Fixed out reference parameters in CLI backend (with test).

src/Generator/Generators/CLI/CLISourcesTemplate.cs

@@ -901,8 +901,9 @@ namespace CppSharp.Generators.CLI
                 var paramType = param.Type;
                 if (paramType is PointerType)
                 {
-                    paramType = (paramType as PointerType).Pointee;
+                    if (!paramType.IsReference())
                         paramMarshal.Prefix = "&";
+                    paramType = (paramType as PointerType).Pointee;
                 }
 
                 var typePrinter = new CppTypePrinter(Driver.TypeDatabase);

tests/Basic/Basic.Tests.cs

@@ -54,6 +54,16 @@ public class BasicTests
         Assert.That(f, Is.EqualTo(10.0f));
     }
 
+    [Test]
+    public void TestPrimitiveOutRefParameters()
+    {
+        var hello = new Hello();
+
+        float f;
+        Assert.That(hello.TestPrimitiveOutRef(out f), Is.True);
+        Assert.That(f, Is.EqualTo(10.0f));
+    }
+
     [Test]
     public void TestNullRef()
     {

tests/Basic/Basic.cpp

@@ -101,6 +101,12 @@ bool Hello::TestPrimitiveOut(CS_OUT float* f)
     return true;
 }
 
+bool Hello::TestPrimitiveOutRef(CS_OUT float& f)
+{
+    f = 10;
+    return true;
+}
+
 int unsafeFunction(const Bar& ret, char* testForString, void (*foo)(int))
 {
     return ret.A;

tests/Basic/Basic.cs

@@ -16,6 +16,7 @@ namespace CppSharp.Tests
             lib.SetClassAsValueType("Bar");
             lib.SetClassAsValueType("Bar2");
             lib.SetMethodParameterUsage("Hello", "TestPrimitiveOut", 1, ParameterUsage.Out);
+            lib.SetMethodParameterUsage("Hello", "TestPrimitiveOutRef", 1, ParameterUsage.Out);
         }
 
         static class Program

tests/Basic/Basic.h

@@ -88,7 +88,7 @@ public:
     Hello* RetNull();
 
     bool TestPrimitiveOut(CS_OUT float* f);
-
+    bool TestPrimitiveOutRef(CS_OUT float& f);
 };
 
 class DLL_API AbstractFoo