arg exception fix

Author: jakubmisek

src/Peachpie.CodeAnalysis/CodeGen/Symbols/SourceTypeSymbol.cs

@@ -88,15 +88,19 @@ void EmitPhpCallable(Emit.PEModuleBuilder module, DiagnosticBag diagnostics)
             // IPhpCallable.Invoke(Context <ctx>, PhpVaue[] arguments)
             //
 
-            // TODO: Switch to the Span based Invoke
-            static bool IsArrayOverload(Symbol member)
+            // TODO: Switch to the Span based Invoke(Context, ReadOnlySpan<PhpValue>)
+            static bool Is_Invoke_Context_PhpValueArray(Symbol member)
             {
-                return member is MethodSymbol method && method.Parameters[1].Type.IsArray();
+                return
+                    member is MethodSymbol method &&
+                    method.Parameters.Length == 2 &&
+                    method.Parameters[1].Type.Is_PhpValueArray()
+                    ;
             }
 
             var invoke = new SynthesizedMethodSymbol(this, iphpcallable.FullName + ".Invoke", false, true, DeclaringCompilation.CoreTypes.PhpValue, isfinal: true)
             {
-                ExplicitOverride = (MethodSymbol)iphpcallable.Symbol.GetMembers("Invoke").Single(IsArrayOverload),
+                ExplicitOverride = (MethodSymbol)iphpcallable.Symbol.GetMembers("Invoke").Single(Is_Invoke_Context_PhpValueArray),
                 ForwardedCall = __invoke,
             };
             invoke.SetParameters(