Edge case: disallow invocation.CaptureProceedInfo

... when byref-likes are present, as they will be gone from the evalua-
tion stack after the intercepted method has returned for the first time.

(DynamicProxy could in theory be made to tolerate nullified `ByRefLike-
Reference` substitutes, but this doesn't seem worth the effort: after
all, `IInvocationProceedInfo` is intended mostly for async interception
scenarios, and even C# disallows `ref struct`s in `async` methods.)

Author: stakx

src/Castle.Core/DynamicProxy/AbstractInvocation.cs

@@ -134,6 +134,15 @@ public void Proceed()
 
 		public IInvocationProceedInfo CaptureProceedInfo()
 		{
+#if FEATURE_BYREFLIKE
+			if (Array.Exists(Arguments, argument => argument is ByRefLikeReference) || ReturnValue is ByRefLikeReference)
+			{
+				throw new InvalidOperationException(
+					"DynamicProxy does not currently support this operation " +
+					"for methods with byref-like parameters or return types. ");
+			}
+#endif
+
 			return new ProceedInfo(this);
 		}